Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu manh » chieu xanh, hieu nganh, dieu hanh
nong cong » cong cong, tong cong, nang cong
khoan cam » khoa cam, khoan va, phan cam
hoc hieu » hoc thieu, hoc hien, doc hieu
tam nong » lam nong, tam duong, tam huong
cong tan » cong tac, cong san, cong thanh
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 - thanh trung tam nong cong tan ((toan cau) or (khoan cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - thanh trung tam nong cong tan ((toan cau) OR (khoan cam))*.