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)
improvedd\" » improveedd\" (Expand Search), improvededd\" (Expand Search), improved\" (Expand Search), improve\" (Expand Search)
improveeededded\" » improveeeededded\" (Expand Search), improvedeeededded\" (Expand Search), improveededded\" (Expand Search), improvedededded\" (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 ((improvee\\\" OR improvedd\\") OR improveeededded\\")))\\"\"".
• Removing quotes may allow a broader search: ((\ theatre improv\ ) OR (\ theatre ((improvee\ OR improvedd ) OR improveeededded ))).