Perhaps you should try some spelling variations:
thien dan » thien dang, thien danh, thien van
thanh vai » thanh hai, thanh van, thanh tai
tu sach » thu sach, su sach, te sach
qua ban » cua ban, qua quan
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
sach ky » sac ky, sach y, sach ty
dua ban » dia ban, cua ban, mua ban
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky sang ma hoa. thien dan ca ((dua ban) or (qua ban)) thanh vai ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky sang ma hoa. thien dan ca ((dua ban) OR (qua ban)) thanh vai ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky sang ma hoa. thien dan ca ((dua ban) or (qua ban)) thanh vai ((cua tre) OR (cuu tre))*".