Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
thanh tung » thanh cong
tong thong » thong thong, dong thong, cong thong
thanh tran » thanh trang, thanh toan, thanh tra
hieu manh » chieu xanh, dieu hanh, hien hanh
than tran » thoan tran, tan tran, thai tran
tung cua » trung cua, tuong cua, dung cua
cua tong » cua cong, cua dong, cua nong

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 manh) OR (hieu nganh)) - thanh tung cua tong thong ((than tran) or (thanh tran)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (hieu nganh)) - thanh tung cua tong thong ((than tran) OR (thanh tran)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (hieu nganh)) - thanh tung cua tong thong ((than tran) or (thanh tran)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (hieu nganh)) - thanh tung cua tong thong ((than tran) or (thanh tran)) ban*.