Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
tuong cua » truong cua, huong cua, thong cua
doc hieu » toc thieu, hoc thieu, hoc hien
tung cua » trung cua, dung cua, tang cua
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan tap » toan ban

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 - thanh ((tung cua) or (tuong cua)) phan ((cong dan) or (cong tan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu nganh - thanh ((tung cua) OR (tuong cua)) phan ((cong dan) OR (cong tan)) toan tap.
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - thanh ((tung cua) or (tuong cua)) phan ((cong dan) or (cong tan)) toan tap*.