Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh trinh » canh tranh, hanh chinh
doc hieu » toc thieu, hoc thieu, hoc hien
cua tong » cua dong, cua nong, cua song
cong san » cong tac
san hanh » san thanh, ban hanh, van hanh
hanh cat » hanh cac, hanh cham, hanh luat

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu nganh - hanh trinh ((cua tong) or (cua cong)) cong san hanh cat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu nganh - hanh trinh ((cua tong) OR (cua cong)) cong san hanh cat*.