Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
thong danh » thong lanh, trong danh, thong thanh
hieu quan » hieu qua, lieu quan, thien quan
thong dan » thong van, tuong dan, thong den
tuong va » truong va, thuong va, luong va
va thong » va thuong, va phuong, he thong
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu quan - thanh tuong va thong ((thong danh) or (thong dan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu quan - thanh tuong va thong ((thong danh) OR (thong dan)) toan ban.
• Adding a wildcard symbol may retrieve word variants: ho hieu quan - thanh tuong va thong ((thong danh) or (thong dan)) toan ban*.