Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh trung » thanh trung, hanh trang, manh trung
trung cua » truong cua, trung tuan, trung cap
tong cong » trong cong, cong cong, dung cong
hoc hieu » hoc thieu, hoc hien, doc hieu
cua tong » cua cong, cua dong, cua nong
cong tan » cong tac, cong san, cong thanh
phan dau » phan tu, hang dau
phan cac » nhan cach, phan lap, phan van

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 nganh - hanh trung cua tong cong tan ((phan dau) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu nganh - hanh trung cua tong cong tan ((phan dau) OR (phan cac)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu nganh - hanh trung cua tong cong tan ((phan dau) or (phan cac))*.