Perhaps you should try some spelling variations:
hieu nganh » hiem ngan, hieu manh, nghiep nganh
vien nganh » vien thanh
thanh tran » thanh trang, thanh toan, thanh tra
tuan thong » toan thong, tran thong, tuan phong
tran tuan » tran xuan, tran quang, tran thanh
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
can cau » van cau, ban cau, ca cau

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