Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
cong thanh » dong thanh, cong trinh, cong tan
hieu manh » chieu xanh, hieu nganh, hien hanh
trang cua » tranh cua, tang cua, trung cua
cua nhung » va nhung
cong san » cong tac
than cao » toan cao, thai cao, than cap

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) OR (dieu hanh)) - hanh trang cua nhung ((cong thanh) or (cong san)) than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (dieu hanh)) - hanh trang cua nhung ((cong thanh) OR (cong san)) than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (dieu hanh)) - hanh trang cua nhung ((cong thanh) or (cong san)) than cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (dieu hanh)) - hanh trang cua nhung ((cong thanh) or (cong san)) than cao*.