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)
improvedededeeed\ » improveedededeeed\ (Expand Search), improvededededeeed\ (Expand Search), improveddedeeed\ (Expand Search), improvededeeed\ (Expand Search)
improvededeeed » improveededeeed (Expand Search), improvedededeeed (Expand Search), improveddeeed (Expand Search), improvedeeed (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 (improvedededeeed\ OR improvededeeed )))~".
• Adding a wildcard symbol may retrieve word variants: ((\ theatre (improv\ OR improvede\) ) OR (\ theatre (improvedededeeed\ OR improvededeeed )))*.