Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
thong cong » trong cong, tong cong, phong chong
hiem ngan » kim ngan, viem gan
tuong cay » trong cay, thong cay, truong cao
doc hiem » doc hieu, hoc hien, doc viet
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hiem ngan - thanh tuong cay ((thong cong) OR (thong thong)) ban ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hiem ngan - thanh tuong cay ((thong cong) OR (thong thong)) ban ((toan cau) OR (toan ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hiem ngan - thanh tuong cay ((thong cong) OR (thong thong)) ban ((toan cau) or (toan ban))*".