Each term may be preceded by the standard Boolean operators NOT, AND, or OR. If you search for example "dogs NOT pizzas", you'll find all documents containing the word "dogs" except those documents which also contain the word "pizzas". If you type in for example "AND hot AND dog AND pizzas", youll find only those documents which contain all three search terms. The default value is OR. Thus a search for "hot dog pizzas" would return pages with at least one of the three terms.

Altavista's shorthand notation works too. A search on dogs -hot is the equivalent to "NOT hot", +hot is equivalent to "AND hot".

If a search term has at least one capital letter, the search will be cast sensitive with respect to that word. On the other hand if all letters are of the same case eg paris, documents will be found with any combination of letter cases eg ParIS, ParIS etc.

To group a collection of words, use quotes. For example, the query "Zoltan Milosevic" (quotes included) would not generate a hit from "Slobodan Milosevic met with Zoltan Smith". Without quotes, the sentence would count. Boolean operators can also act on quotations: a search on '+the +kitten not "the kitten" would return only those documents where "the" and "kitten" appear separately.

Intermediate Search finds words, not strings. A search for "in" would turn up only that word, not "bin", "inside", or "acquaintance". To perform a string search, preface your term with the dollar sign - a query on "$in" would find all words lists above. Note that more complex wildcard searches using the asterisk are not permitted. Including the asterisk in your query will return a list of all files, but that's its only function.

These rules are based on Altavista's query syntax; a look at their Search Tips may prove useful.