Perhaps you should try some spelling variations:
manh trung » manh tung, thanh trung, manh hung
tuan phung » tuan hung, tuan phong, tran phuong
phung cong » nhung cong, phong cong, nhung chong
hien tinh » khien tinh, thien tinh, bien tinh
cong tac » cong ty
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tinh - ((manh trung) OR (canh tranh)) tuan phung cong tac ((toan cau) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien tinh - ((manh trung) or (canh tranh)) tuan phung cong tac ((toan cau) OR (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: hoc hien tinh - ((manh trung) or (canh tranh)) tuan phung cong tac ((toan cau) OR (toan ban))*.