Perhaps you should try some spelling variations:
thanh trung » thanh tung
hiem ngan » kim ngan, viem gan
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
thong cau » thong cac, thong cap, thong tu
hoc hiem » hoc hien, hoc thieu, hoc thiet
thong va » thong cua, truong va, thong qua
cach » cac, sach

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 thong va ((thong cau) or (phong cach))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hiem ngan - thanh trung cua thong thong va ((thong cau) OR (phong cach)).
• Adding a wildcard symbol may retrieve word variants: hoc hiem ngan - thanh trung cua thong thong va ((thong cau) or (phong cach))*.