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