Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
truong cao » truong dai
nhung cong » dung cong, thong cong, hang cong
doc hieu » toc thieu, hoc thieu, hoc hien
dung cua » dung luan, dung cho
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, thanh cac
toan cau » toan cao, toan ban, toan tap

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 ((dung cua) or (truong cao)) nhung cong tan ((than cap) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu nganh - thanh ((dung cua) OR (truong cao)) nhung cong tan ((than cap) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - thanh ((dung cua) or (truong cao)) nhung cong tan ((than cap) or (toan cau))*.