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)
improveededde\" » improveeededde\" (Expand Search), improvedeededde\" (Expand Search), improvededde\" (Expand Search), improveedde\" (Expand Search), improveddde\" (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 improveed\\")) OR (\\\"theatre (improveede\\" OR improveededde\\")))~\\"\"".
• Removing quotes may allow a broader search: ((\ theatre (improv\ OR improveed )) OR (\ theatre (improveede OR improveededde )))~.