Perhaps you should try some spelling variations:
thanh tung » thanh cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
chua dong » ha dong, huy dong, hoa dong
hoc hieu » hoc thieu, hoc hien, doc hieu
cua dong » cua cong, cua dang, cua nong
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
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 tung ((cua dong) OR (chua dong)) ((cong tan) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - thanh tung ((cua dong) OR (chua dong)) ((cong tan) OR (cong san)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - thanh tung ((cua dong) OR (chua dong)) ((cong tan) or (cong san)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh tung ((cua dong) OR (chua dong)) ((cong tan) or (cong san)) toan cau*.