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)
improvededede\\" » improveededede\\" (Expand Search), improvedededede\\" (Expand Search), improveddede\\" (Expand Search), improvedede\\" (Expand Search)
improveed\\" » improveeed\\" (Expand Search), improvedeed\\" (Expand Search), improved\\" (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 (improvede\\\" OR improvededede\\\"))) OR (\\\"theatre improveed\\\"))\\"\"".
• Removing quotes may allow a broader search: ((\ theatre (improv\ OR (improvede\ OR improvededede\ ))) OR (\ theatre improveed\ )).