Perhaps you should try some spelling variations:
improv\\" » improve\\" (Expand Search), improved\\" (Expand Search)
improveded\" » improveeded\" (Expand Search), improvededed\" (Expand Search), improved\" (Expand Search), improvedd\" (Expand Search)
improvede\\" » improveede\\" (Expand Search), improvedede\\" (Expand Search), improved\\" (Expand Search), improve\\" (Expand Search)
improvededed\\" » improveededed\\" (Expand Search), improvedededed\\" (Expand Search), improveded\\" (Expand Search), improvedded\\" (Expand Search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "\"\\"((\\\"theatre improv\\\") OR (\\\"theatre ((improveded\\" OR improvede\\\") OR improvededed\\\")))\\"\"".
• Removing quotes may allow a broader search: ((\ theatre improv\ ) OR (\ theatre ((improveded OR improvede\ ) OR improvededed\ ))).