The search terms can be simple - with only one word - or composed - with two or more words.

Example:
"virtual environments"

The search for words with accent marks can be done by including or excluding the accent marks. This is also true for words with "ç":

Example:
exportacao = exportação (exportation in Portuguese is written with a ç)

Commonly used words in Portuguese and in English are ignored by the search tool:

Portuguese Stop Words:

"a", "as", "ao", "aos", "até", "de", "da", "das", "do", "dos", "e", "em", "mas", "na", "nas", "nem", "no", "nos", "o", "os", "ou", "para", "pelo", "pelos", "pois", "por", "que", "se", "um", "uma", "uns", "umas"

English Stop Words:

"and", "are", "at", "be", "but", "by", "for", "if", "in", "into", "is", "it", "not", "of", "on", "or", "such", "the", "to", "was"

Use the asterisk (*) symbol to the right side of a word to replace any remaining number of characters.

Example:
hypot* = hypothalamus, hypotension, hypothyroidism, hypothesis.

IT SHOULD BE STRESSED THAT WITHOUT THE USE OF THE (*) SYMBOL, THE SIMPLE PLURAL FORM, FOR EXAMPLE, WILL NOT BE INCLUDED IN THE SEARCH.

Example:
"cat" will not be linked with results for "cats".

To ensure the presence of a word in the result, use the symbol (+) in front of the word. In the example below, the word "educate" is optional, but the word "cat" is obligatory.

Example:
educate +cat

To guarantee that a word will not appear in the results, use the minus (-) symbol or the exclamation mark (!) or the word NOT in front of the word you do not want to appear. In the example below, the word "educate" is optional, and the word "cat" should not appear.

Example:
educate -cat = educate !cats = educate NOT cats

Three boolean operators can be used to specify the terms of a search: AND, OR and NOT. The boolean operators must be typed in uppercase letters.

AND - Retrieves documents that contain all the search terms. AND can also be replaced by the symbol &&. This is the standard operator in Lume searches; therefore, if nothing is written between the search terms, it will be as if AND had been used.

In the example below all documents that contain the terms "irrigation" and "rice" are retrieved.

Exemplo:
irrigation AND rice = irrigation && rice = irrigation rice

OR - Retrieves documents that contain at least one of the search terms. OR can also be replaced by the symbol ||.

In the example below all documents that contain either "education" or "university" or both terms are retrieved.

Exemplo:
education OR university = education || university

NOT - Eliminates a specific term, see Words banned in a result section.

You can combine Boolean operators by using parenthesis.

In the search below, the following items are consulted: items that contain the term "reptiles" and do not contain the term "iguana", as well as items that contain the term "marsupials" and the term "Australia".

Example:
(reptiles NOT iguana) OR (marsupials AND Australia) =
(reptiles ! iguana) || (marsupials && Australia) =
(reptiles -iguana) OR (marsupials Australia)

The search results are sorted by the relevance of the term consulted on the retrieved item(s). That is, it corresponds to the proportion of the number of occurrences of the term and the size of the document or field (metadata). The first items to appear on the list are those that contain the largest number of occurrences of the searched term.