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)
improvedeedeeed\" » improveedeedeeed\" (Expand Search), improvededeedeeed\" (Expand Search), improvededeeed\" (Expand Search), improveedeeed\" (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 (\\\"theatre (improvedeedeeed\\" OR improveed\\\")))\\"\"".
• Removing quotes may allow a broader search: ((\ theatre (improv\ OR improvede )) OR (\ theatre (improvedeedeeed OR improveed\ ))).