Perhaps you should try some spelling variations:
thieu quang » hieu quang, trien quang, hieu quan
thien quan » trien quang, lien quan, thien van
thong danh » thong dan, thong lanh, thong thanh
trong danh » trong doanh, truong danh, trong anh
tranh va » tranh van, trang va, trinh va
va thong » va thuong, va phuong, he thong
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu quang) OR (thien quan)) - canh tranh va thong ((thong danh) or (trong danh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu quang) OR (thien quan)) - canh tranh va thong ((thong danh) OR (trong danh)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu quang) OR (thien quan)) - canh tranh va thong ((thong danh) or (trong danh)) toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu quang) OR (thien quan)) - canh tranh va thong ((thong danh) or (trong danh)) toan tap*.