Perhaps you should try some spelling variations:
vien nganh » vien thanh
thanh tung » thanh cong
hiem ngan » kim ngan, viem gan
cua trong » cua truong, cua trung, qua trong
tung cua » trung cua, tuong cua, dung cua
cong dan » cong san, cong tan, huong dan
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.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((vien nganh) or (hiem ngan)) - thanh tung cua trong cong dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((vien nganh) OR (hiem ngan)) - thanh tung cua trong cong dan than cap.
• Adding a wildcard symbol may retrieve word variants: hoc ((vien nganh) or (hiem ngan)) - thanh tung cua trong cong dan than cap*.