Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
tuan luc » than luc, tuan khuc, nhan luc
lieu van » lieu va, hieu van, sieu van
van tuan » van quan, van ban, anh tuan
van nang » van quang, van ban, van dong
va nang » da nang, cam nang, kha nang
va lang » hoa lang
lang di » lang dai, hang di, lang du
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va, loc va
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ((va nang) or (van nang)) xa hoi. lieu van tuan luc va lang di ((cua tre) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ((va nang) OR (van nang)) xa hoi. lieu van tuan luc va lang di ((cua tre) OR (cua su)).
• Adding a wildcard symbol may retrieve word variants: hoc sach ((va nang) or (van nang)) xa hoi. lieu van tuan luc va lang di ((cua tre) or (cua su))*.