Perhaps you should try some spelling variations:
thanh trung » thanh tung
thong cong » trong cong, thong thong, phong chong
trung cua » truong cua, trung tuan, trung cap
tong cong » trong cong, cong cong, dung cong
hoc hieu » hoc thieu, doc hieu, hoc dieu
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

You may be able to get more results by adjusting your search query.

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