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), improvedde (Expand Search)
improvee » improveee (Expand Search), improvedee (Expand Search), improve (Expand Search), improved (Expand Search)
improveedededededd » improveeedededededd (Expand Search), improvedeedededededd (Expand Search), improveddedededd (Expand Search), improvedededededd (Expand Search), improveddededededd (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 improvee )) OR (\ theatre improveedededededd ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\ theatre ((improv\ OR improveede ) OR improvee )) OR (\ theatre improveedededededd ))".
• Adding a wildcard symbol may retrieve word variants: ((\ theatre ((improv\ OR improveede ) OR improvee )) OR (\ theatre improveedededededd ))*.