Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
thuong con » thuong dong, truong cong, thuong chi
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
tuong cua » truong cua, huong cua, thong cua
phan cau » phan dau, phan cac, phan tu
than cap » khan cap, thanh lap, thanh cac
ho hieu » ho chieu, hoi hieu, nho hieu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - thanh tuong cua ((thuong con) OR (thong cong)) dan ((phan cau) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - thanh tuong cua ((thuong con) OR (thong cong)) dan ((phan cau) or (than cap))~".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - thanh tuong cua ((thuong con) OR (thong cong)) dan ((phan cau) or (than cap))*.