Perhaps you should try some spelling variations:
chiet tach » chieu sach
nhieu tang » chieu sang, hieu lang, nhiet nang
cua nhung » va nhung
anh nang » ganh nang, anh bang, anh dang
nang cua » mang cua, hang cua, nang dua
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan ban » van ban

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: hoc ((chiet tach) OR (nhieu tang)) - anh nang cua nhung ((cong dan) OR (cong san)) toan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc ((chiet tach) or (nhieu tang)) - anh nang cua nhung ((cong dan) or (cong san)) toan ban*.