While I wait, as I know many others are, for boolean search operators in DT I want to suggest a few other advanced search options, particularly fuzzy searching with the ability to select the degree of fuzziness and phonetic and synonym searching. These features have been available (and very useful) for several years on the professional pc search app dtsearch. Below Ive pasted the search features as listed on dtsearch.com:
stemming
Finds grammatical variations on endings, like applies, applied, applying in a search for apply
fuzzy searching
Finds words even if they are misspelled. A search for alphabet with a fuzziness of 1 would also find alphaqet. With a fuzziness of 3, the same search would find both alphaqet and alpkaqet
phonic searching
Finds words that sound alike, like Smythe in a search for Smith
synonym expansion
Finds word synonyms using a comprehensive English language thesaurus (dtSearch Web can also support custom thesaurus terms)