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)
improveededeed\" » improveeededeed\" (Expand Search), improvedeededeed\" (Expand Search), improvededeed\" (Expand Search), improveddedeed\" (Expand Search), improveedeed\" (Expand Search)
improveed\\" » improveeed\\" (Expand Search), improvedeed\\" (Expand Search), improved\\" (Expand Search), improvedd\\" (Expand Search), improve\\" (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 (improveededeed\\" OR improveed\\\")))\\"\"".
• Removing quotes may allow a broader search: ((\ theatre (improv\ OR improvee\ )) OR (\ theatre (improveededeed OR improveed\ ))).