As a User I want to be able to search by word

[dimus]

Searching by any word from a name-string is important for figuring out cases that cannot be solved by
canonical forms. We need to have an explanation on the entry page how to search by word with 'w:pardosa' or something like that. Also search by word should not return results with partial words.
like looking for 'w:long' should not return name-string with 'longifolia'