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), improvedd\ (Expand Search)
improvededdd » improveededdd (Expand Search), improvedededdd (Expand Search)
improveeed » improveeeed (Expand Search), improvedeeed (Expand Search), improved (Expand Search), improveed (Expand Search), improveded (Expand Search)
improvee » improveee (Expand Search), improvedee (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 improveed\) OR improvededdd ) OR improveeed )) OR (\ theatre improvee ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\ theatre (((improv\ OR improveed\) OR improvededdd ) OR improveeed )) OR (\ theatre improvee ))".
• Adding a wildcard symbol may retrieve word variants: ((\ theatre (((improv\ OR improveed\) OR improvededdd ) OR improveeed )) OR (\ theatre improvee ))*.