Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cua nhung » va nhung
tranh ban » trinh ban, tranh hang, tranh luan
hoc hieu » hoc thieu, hoc hien, doc hieu
tinh cua » trinh cua, sinh cua, tinh chat
cong tan » cong tac, cong san, cong thanh
tran van » luan van

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 manh - hanh tinh cua nhung ((cong tan) or (cong ty)) ((tran van) or (tranh ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh tinh cua nhung ((cong tan) OR (cong ty)) ((tran van) OR (tranh ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh tinh cua nhung ((cong tan) or (cong ty)) ((tran van) or (tranh ban))*.