Searches are case non-sensitive.

Searching for:

[Fourier +"no noise" -board] – will make the search engine to find all documents in which the word "Fourier" or the phrase "no noise" as found between the double quotes are present. Since "no noise" is mandatory term all documents which do not have it will be removed from the search. Then the documents which have the prohibited word "board" will be removed too. The remaining documents will be the result from the search. The mandatory presence sign (+) supersedes the "OR" terms.

[+"Composer: Beethoven" piano -flute] – will find all document in which "Composer: Beethoven" is present, piano may or may not be present, and flute is not present;

[piano viola cello "electronic guitar"] – will find all document in which at lest one of the terms is found;

[+"Composer: Chopin" +motivating +"fast piano" -flute -trumpet] – will find all document in which the terms "Composer: Chopin", "motivating" and "fast piano" are present, while the terms "flute" and "trumpet" are not.