Perhaps you should try some spelling variations:
thanh tung » thanh cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
tung qua » dung qua, tuong quan, trung quan
qua dung » quang dung, su dung, qua song
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: ho ((hieu manh) or (chinh sach)) - thanh tung qua dung ((cong tan) OR (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chinh sach)) - thanh tung qua dung ((cong tan) OR (cong san)) toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu manh) or (chinh sach)) - thanh tung qua dung ((cong tan) OR (cong san)) toan cau*".