Perhaps you should try some spelling variations:
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
hiem ngan » kim ngan, viem gan
cua thong » cua thuong, cua khong, cua tong
hoc hiem » hoc hien, hoc thieu, hoc thiet
cong dan » cong san, cong tan, huong dan
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan 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 hiem ngan - ((thanh trung) OR (thanh tung)) cua thong cong dan ((than cap) OR (khan cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hiem ngan - ((thanh trung) or (thanh tung)) cua thong cong dan ((than cap) OR (khan cap))~".
• Adding a wildcard symbol may retrieve word variants: hoc hiem ngan - ((thanh trung) or (thanh tung)) cua thong cong dan ((than cap) OR (khan cap))*.