Multiple words search (with operators AND, OR, NOT)

Query Type	Query	Meaning
Two words	Computer program	First word immediately followed by second word
	computer and program	Both words must be present, no sort order
	computer or program	At least one word must be present
	Computer w/2 program	Both words must be present, within 2 words from each other
One word excluding another word	computer and not program	First word must be present, second must not be present
More complex multiple word searches with operators (and, or, not) are likewise. Usage of parenthesis is advised	computer and not (program or windows)	First word must be present, but the others must not be present
	computer or (program and windows)	First word or second phrase (both words) must be present