Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
hieu quang » thieu quang, hieu quan, hieu qua
thong danh » thong dan, thong lanh, trong danh
tuong va » truong va, thuong va, luong va
va thong » va thuong, va phuong, he thong
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 quang - thanh tuong va thong thong danh ((toan ban) OR (van ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu quang - thanh tuong va thong thong danh ((toan ban) OR (van ban))".
• Adding a wildcard symbol may retrieve word variants: ho hieu quang - thanh tuong va thong thong danh ((toan ban) OR (van ban))*.