Only words with 2 or more characters are accepted.
Max 200 chars total.
Space is used to separate words, " " can be used to search for a whole string.
AND, OR and NOT are prefix words, by default words are searched 'and' eg this AND that, but you can also search this OR that, this NOT that.
+ (plus) , | (pipe) , - (minus) can be used instead of AND, OR and NOT. eg this | that (this OR that)
All search words are converted to lowercase.