Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh qua » tranh cua, thanh qua, trinh qua
hoc hieu » hoc thieu, hoc hien, doc hieu
qua dung » quang dung, su dung, qua song
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.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - hanh tranh qua dung ((cong san) or (cong tac)) ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh tranh qua dung ((cong san) OR (cong tac)) ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - hanh tranh qua dung ((cong san) or (cong tac)) ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh tranh qua dung ((cong san) or (cong tac)) ((toan cau) OR (toan ban))*.