Perhaps you should try some spelling variations:
entr » entre, entry, ent
entro » entreo, entryo, ento, entre, entry, intro
entra » entrea, entrya, enta, entre, entry, extra
entropie » entreopie, entryopie, entopie, entrepie, entrypie, intropie
entropy » entreopy, entryopy, entopy, entrepy, entrypy, intropy

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((entr OR entro) OR entra) OR (entropie OR entropy))('act OR 'acts).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((entr OR entro) or entra) or (entropie or entropy))('act or 'acts)".
• Adding a wildcard symbol may retrieve word variants: (((entr OR entro) or entra) or (entropie or entropy))('act or 'acts)*.