Perhaps you should try some spelling variations:
improv\ » improve\ (Expand Search), improved\ (Expand Search)
improveede » improveeede (Expand Search), improvedeede (Expand Search), improved (Expand Search), improvede (Expand Search), improvee (Expand Search)
improveed\ » improveeed\ (Expand Search), improvedeed\ (Expand Search), improved\ (Expand Search), improve\ (Expand Search)
improvedeed\ » improveedeed\ (Expand Search), improvededeed\ (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.

• Performing a fuzzy search may retrieve terms with similar spellings: ((\ theatre (improv\ OR improveede )) OR (\ theatre ((improveed\ OR improvedeed\) OR improveed )))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\ theatre (improv\ OR improveede )) OR (\ theatre ((improveed\ OR improvedeed\) OR improveed )))".
• Adding a wildcard symbol may retrieve word variants: ((\ theatre (improv\ OR improveede )) OR (\ theatre ((improveed\ OR improvedeed\) OR improveed )))*.