This service is currently not being updated Boolean Operators
In the simplest case, a search argument can be a single word or term. However, more than one word is allowed as long as it is are separated by at least one space. In this case, the space is interpreted as 'AND' linking the various terms. The words 'AND', 'OR' and 'NOT' have special meaning as they correspond to boolean operators rather than words to be searched. They can be written in upper case or lower case.
Examples:- cordis and environment
- cordis environment
-
(Both return the same result)
Wildcards
Furthermore, a search term may contain the special characters '_', '?', '$' and '*' - known as wildcards - where either of the first two matches zero or one character, and either of the last two matches multiple (zero to many) characters.
Example:- c*dis
Search Phrase
If you want to override the behaviour of reserved words and of the space character, then you can formulate a Search Phrase by enclosing search terms in double quotes. In this case, the special meaning of terms or characters is lost and the phrase is literally searched in the database. However, wildcards characters retain their meaning.
Example:- - "c$dis database"
