Perhaps you should try some spelling variations:
entr » entry, entra, entro
entre » entrye, entrae, entroe, entry
entropie » entryopie, entraopie, entroopie, entropy
entrare » entryare, entraare, entroare, entrar, entrance, entraine

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 entre) OR (entropie OR entrare))('act OR 'acute ).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((entr OR entre) or (entropie or entrare))('act or 'acute )".
• Adding a wildcard symbol may retrieve word variants: ((entr OR entre) or (entropie or entrare))('act or 'acute )*.