Perhaps you should try some spelling variations:
duong cong » dung cong, luong cong, duong trong
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh tung » thanh tung, manh tung, hanh dung
cua duong » cua dong, cua huong, qua duong
hoc hieu » hoc thieu, hoc hien, doc hieu
anh tang » anh bang, anh dang, anh nang
cong dan » cong san, cong tan, huong dan
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu

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 tung) or (anh tang)) cua duong cong dan ((than cau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - ((hanh tung) OR (anh tang)) cua duong cong dan ((than cau) OR (phan cau)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - ((hanh tung) or (anh tang)) cua duong cong dan ((than cau) or (phan cau))*.