Perhaps you should try some spelling variations:
truong thanh » truong trung, truong thpt, truong chung
tran thanh » van thanh, quan thanh
ban thanh » ban hanh, ban hang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong tan » cong tac, cong san, cong thanh
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 ((tran thanh) or (ban thanh)) - canh tranh cua nhung ((cong tan) or (truong thanh)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tran thanh) OR (ban thanh)) - canh tranh cua nhung ((cong tan) OR (truong thanh)) toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((tran thanh) or (ban thanh)) - canh tranh cua nhung ((cong tan) or (truong thanh)) toan ban*.