Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thanh chau » thanh cha, thanh cham, thanh chu
hieu cach » hieu cac, chieu sach, hieu ca
hoc hieu » hoc thieu, hoc hien, doc hieu
tranh va » tranh van, trang va, trinh va
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, thanh cac
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu cach - canh tranh va nhung cong tan ((((thanh chau) or (than cap))) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu cach - canh tranh va nhung cong tan ((((thanh chau) OR (than cap))) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu cach - canh tranh va nhung cong tan ((((thanh chau) or (than cap))) or (toan ban))*.