In general, the Verity Search Engine reads your query from right to left, processing each search string and operator action in turn to produce a results list of matches. Some operators carry more weight than others, however, which may affect the interpretation of your query.
In the Verity Query Language, the AND operator takes precedence over the OR operator. Search strings linked by the AND operator are processed before search strings linked by the OR operator. The following example is interpreted to mean: Find pages that match adobe and verity, or pages that match cognisoft.
To ensure that the OR operator is interpreted first, you can enclose the search strings linked by the OR operator in parentheses as a nested query.