Perhaps you should try some spelling variations:
thanh trung » thanh tung
hiem ngan » kim ngan, viem gan
cua thong » cua thuong, cua khong, cua tong
ca thuong » cao thuong, cua thuong, cp thuong
hoc hiem » hoc hien, hoc thieu, hoc thiet
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hiem ngan - thanh trung ((cua thong) or (((ca thuong) OR (va thuong)))) cong dan phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hiem ngan - thanh trung ((cua thong) OR (((ca thuong) OR (va thuong)))) cong dan phan lap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hiem ngan - thanh trung ((cua thong) or (((ca thuong) OR (va thuong)))) cong dan phan lap*".