Perhaps you should try some spelling variations:
improv\\" » improve\\" (Expand Search), improved\\" (Expand Search)
improvee\" » improveee\" (Expand Search), improvedee\" (Expand Search), improve\" (Expand Search), improved\" (Expand Search)
improveedd\" » improveeedd\" (Expand Search), improvedeedd\" (Expand Search), improvedd\" (Expand Search), improveddd\" (Expand Search), improved\" (Expand Search)
improveededdeded\" » improveeededdeded\" (Expand Search), improvedeededdeded\" (Expand Search), improvededdeded\" (Expand Search), improveddeddeded\" (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 ((improvee\\" OR improveedd\\") OR improveededdeded\\")))\\"\"".
• Removing quotes may allow a broader search: ((\ theatre improv\ ) OR (\ theatre ((improvee OR improveedd ) OR improveededdeded ))).