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)
improvedd\\" » improveedd\\" (Expand Search), improvededd\\" (Expand Search), improved\\" (Expand Search), improve\\" (Expand Search)
improvededde\\" » improveededde\\" (Expand Search), improvedededde\\" (Expand Search), improveddde\\" (Expand Search), improvedde\\" (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 (\\\"theatre ((improvede\\\" OR improvedd\\\") OR improvededde\\\")))~\\"\"".
• Removing quotes may allow a broader search: ((\ theatre improv\ ) OR (\ theatre ((improvede\ OR improvedd\ ) OR improvededde\ )))~.