All of them can limit your search. Here are the meanings of all of them:
AND: Find results that only contain both words
OR: Find results that contain either (or both) words
NOT: Do not find results that contain a word
XOR: Find results that contain either (but not both) words
the answer to this question #19 is AND
Boolean is a type, not an operator and can have the value of either TRUE or FALSE
BUT (apex)
Avasearch.com announced that they will create a search engine to be used only for boolean search terms.
Write a narrow boolean search for pages about pet boxers.
The answer is "and"
and
the answer to this question #19 is AND
"http://wiki.answers.com/Q/Which_Boolean_operator_limits_your_search_so_that_each_term_you_input_must_be_in_the_same_document" is it: or, not,and,also
and
AND
what is boolean operator
+|plus
The answer will increase in numbers.
The answer will increase in numbers.
Boolean is a type, not an operator and can have the value of either TRUE or FALSE
NOT