Perhaps you should try some spelling variations:
thanh trung » thanh tung
vien nganh » vien thanh
hiem ngan » kim ngan, viem gan
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
cong dan » cong san, cong tan, cong dong
than cap » khan cap, thanh lap, thanh cac

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

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