Perhaps you should try some spelling variations:
entr » ent, engr, enth
entry » enty, engry, enthy
entra » enta, engra, entha, extra, intra
entro » ento, engro, entho, intro, enero, entao
entre » ente, engre, enthe
enthe » menthe, lenthe, benthe

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