Perhaps you should try some spelling variations:
improv » improve (Expand Search), improved (Expand Search)
improvee » improveee (Expand Search), improvedee (Expand Search), improve (Expand Search), improved (Expand Search)
improveee » improveeee (Expand Search), improvedeee (Expand Search), improvee (Expand Search), improvede (Expand Search), improve (Expand Search), improved (Expand Search)
improveded » improveeded (Expand Search), improvededed (Expand Search), improved (Expand Search)
improvedee » improveedee (Expand Search), improvededee (Expand Search), improved (Expand Search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( theatre ((improv OR (improvee OR improveee)) OR improveded )) OR ( theatre improvedee ))~".
• Adding a wildcard symbol may retrieve word variants: (( theatre ((improv OR (improvee OR improveee)) OR improveded )) OR ( theatre improvedee ))*.