Perhaps you should try some spelling variations:
van nhuong » van chuong, van phuong, van huong
cong thanh » dong thanh, cong trinh, truong thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh tran » hanh trang, thanh tran, hanh tram
hoc hieu » hoc thieu, hoc hien, doc hieu
tran van » luan van
cong tan » cong tac, cong san, cong ty
toan cau » toan cao, toan ban, toan tap

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