Perhaps you should try some spelling variations:
math works » math work, earth works, oauth works
league can » league a, league c, colleague can
league jan » league jason, league june, league a
5th works » 5th world, 5th workshop

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: 2008 ((5th works) OR (math works)) hooking ((league can) OR (league jan)) chung.
• The words AND, OR and NOT may confuse the search; try adding quotes: "2008 ((5th works) OR (math works)) hooking ((league can) or (league jan)) chung".
• Adding a wildcard symbol may retrieve word variants: 2008 ((5th works) OR (math works)) hooking ((league can) or (league jan)) chung*.