Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
thanh tung » thanh cong
tam luong » tam huong, ham luong, tam thuong
tam duong » tam huong, tuan duong, thao duong
hoc hieu » hoc thieu, hoc hien, doc hieu
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat
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 nganh - ((thanh trung) OR (thanh tung)) ((tam luong) or (tam duong)) cong tac phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu nganh - ((thanh trung) OR (thanh tung)) ((tam luong) OR (tam duong)) cong tac phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu nganh - ((thanh trung) OR (thanh tung)) ((tam luong) or (tam duong)) cong tac phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc hieu nganh - ((thanh trung) OR (thanh tung)) ((tam luong) or (tam duong)) cong tac phan cau*.