Perhaps you should try some spelling variations:
improv\\" » improve\\" (Expand Search), improved\\" (Expand Search)
improvede\\" » improveede\\" (Expand Search), improvedede\\" (Expand Search), improved\\" (Expand Search), improve\\" (Expand Search)
improvee\\" » improveee\\" (Expand Search), improvedee\\" (Expand Search), improve\\" (Expand Search), improved\\" (Expand Search)
improveede\\" » improveeede\\" (Expand Search), improvedeede\\" (Expand Search), improvede\\" (Expand Search), improvedde\\" (Expand Search), improved\\" (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 improvede\\\")) OR (\\\"theatre (improvee\\\" OR improveede\\\")))~\\"\"".
• Removing quotes may allow a broader search: ((\ theatre (improv\ OR improvede\ )) OR (\ theatre (improvee\ OR improveede\ )))~.