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)
improvedd\\" » improveedd\\" (Expand Search), improvededd\\" (Expand Search), improved\\" (Expand Search), improve\\" (Expand Search)
improveededeeed\" » improveeededeeed\" (Expand Search), improvedeededeeed\" (Expand Search), improvededeeed\" (Expand Search), improveddedeeed\" (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 improvee\\\")) OR (\\\"theatre (improvedd\\\" OR improveededeeed\\")))\\"\"".
• Removing quotes may allow a broader search: ((\ theatre (improv\ OR improvee\ )) OR (\ theatre (improvedd\ OR improveededeeed ))).