Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu nganh » vien nganh, hieu manh, nghiep nganh
luong cong » dung cong, trong cong, cong cong
hiem ngan » kim ngan, viem gan
tam luong » tam duong, tam huong, ham luong
cong tac » cong ty
tac nhan » tao nhan, cac nhan, dac nhan
nhan cau » nhanh cau, phan cau, nhan sau

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) OR (hiem ngan)) - thanh trung tam luong cong tac nhan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu nganh) OR (hiem ngan)) - thanh trung tam luong cong tac nhan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu nganh) OR (hiem ngan)) - thanh trung tam luong cong tac nhan cau*.