Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
thieu quang » hieu quang, trien quang, hieu quan
thien quan » trien quang, lien quan, thien van
thong manh » thong minh, thong mang, thong danh
tuong ho » tong hop
ho thong » pho thong, hoa thong, hoc thong
toan ban » van ban

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: hoc ((thieu quang) OR (thien quan)) - thanh tuong ho thong thong manh ((toan ban) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu quang) OR (thien quan)) - thanh tuong ho thong thong manh ((toan ban) or (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu quang) OR (thien quan)) - thanh tuong ho thong thong manh ((toan ban) or (toan tap))*.