We've introduced a new search feature during our last site update (the one with the UI change (2 columns each row instead of only 1 column).
Registered and logged in users can now search for "C#" or similar 2 characters long terms.
Please use the "advanced search" for this.
Enter your short term in the field "Wildcard" and start your search.

The result:

In addition you can now search for terms beginning with a few characters link searching for "finan".
This will find words beginning with "finan" like "Finance", "Financial" or "Financially".
