Perhaps you should try some spelling variations:
improv\\" » improve\\" (Expand Search), improved\\" (Expand Search)
improveede\" » improveeede\" (Expand Search), improvedeede\" (Expand Search), improved\" (Expand Search), improvede\" (Expand Search), improvee\" (Expand Search)
improveed\" » improveeed\" (Expand Search), improvedeed\" (Expand Search), improved\" (Expand Search), improve\" (Expand Search)
improveededeeed\" » improveeededeeed\" (Expand Search), improvedeededeeed\" (Expand Search), improveddeeed\" (Expand Search), improvededeeed\" (Expand Search), improveedeeed\" (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 improveede\\")) OR (\\\"theatre (improveed\\" OR improveededeeed\\")))\\"\"".
• Removing quotes may allow a broader search: ((\ theatre (improv\ OR improveede )) OR (\ theatre (improveed OR improveededeeed ))).