Perhaps you should try some spelling variations:
thanh tung » thanh cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
tuan dung » tuan duong, tan dung, tuan dang
tran dung » tran dang, tran hung, tran quang
hoc hieu » hoc thieu, hoc hien, doc hieu
cong san » cong tac
toan cau » toan ban, toan tap, toan tai
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 ((tuan dung) or (tran dung)) cong san ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - thanh tung ((tuan dung) OR (tran dung)) cong san ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh tung ((tuan dung) or (tran dung)) cong san ((toan cau) or (toan cao))*.