Perhaps you should try some spelling variations:
thieu quang » thien quan, trien quang, hieu quan
hieu quang » hieu quan, hieu qua, diep quang
thanh tung » thanh cong
thong danh » thong dan, thong lanh, trong danh
va phuong » va thuong, cac phuong
danh toan » manh toan, anh toan, dan toan
va thong » va thuong, he thong, va cong
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: ho ((hieu quang) OR (thieu quang)) - thanh tung ((va thong) or (va phuong)) thong danh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu quang) OR (thieu quang)) - thanh tung ((va thong) OR (va phuong)) thong danh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu quang) OR (thieu quang)) - thanh tung ((va thong) or (va phuong)) thong danh toan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu quang) OR (thieu quang)) - thanh tung ((va thong) or (va phuong)) thong danh toan ban*.