Perhaps you should try some spelling variations:
chau tinh » cuu tinh, ha tinh, cua tinh
hoc chau » hoc chat, moc chau, hoc cau
tranh va » tranh van, trang va, trinh va
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
toan ban » van ban
va nang » van nang, da nang, cam nang

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

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