Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh tran » hanh trang, thanh tran, hanh tram
van nhung » van nhuong, va nhung, van hung
tran van » luan van
cong tac » cong ty
toan cau » toan cao, toan ban, toan tap
cong ha » cong hoa, dong ha, cong san

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - hanh tran van nhung ((cong ha) or (((cong thanh) or (cong tac)))) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh tran van nhung ((cong ha) OR (((cong thanh) OR (cong tac)))) toan cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh tran van nhung ((cong ha) or (((cong thanh) or (cong tac)))) toan cau*.