Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hieu manh » chieu xanh, hieu nganh, dieu hanh
hoc hieu » hoc thieu, hoc hien, doc hieu
trang va » tran van, hang va
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu
va nang » van nang, da nang, cam nang

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