Complex searches in GKC

[vma]

Hi,
we noticed that complex searches are not possible in Knowledge Center.
For example in WDE if we search for substrings like "Schnee" nothing comes up but there are articles containing word "Schneesport". Also using wildcards like * doesn't help. If I search for the entire "Schneesport" word than the search is successful and the articles are listed.

Another example, in the article I have an email written like "myname@mycompany.com" but if I search for "mycompany" the search comes out empty.

Is there a way to improve this search?

vma