Perhaps you should try some spelling variations:
improv\ » improve\ (Expand Search), improved\ (Expand Search)
improveeed\ » improveeeed\ (Expand Search), improvedeeed\ (Expand Search), improved\ (Expand Search), improvedd\ (Expand Search)
improveede\ » improveeede\ (Expand Search), improvedeede\ (Expand Search), improved\ (Expand Search)
improveeed » improveeeed (Expand Search), improvedeeed (Expand Search), improved (Expand Search), improvedd (Expand Search)
improveee » improveeee (Expand Search), improvedeee (Expand Search), improve (Expand Search), improved (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 improveeed\) OR (improveede\ OR improveeed ))) OR (\ theatre improveee ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\ theatre ((improv\ OR improveeed\) OR (improveede\ OR improveeed ))) OR (\ theatre improveee ))".
• Adding a wildcard symbol may retrieve word variants: ((\ theatre ((improv\ OR improveeed\) OR (improveede\ OR improveeed ))) OR (\ theatre improveee ))*.