Perhaps you should try some spelling variations:
dung sai » dung tai, dung va, dung dat
danh sai » danh bat, danh dau, hanh san
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
hiem he » hiem xe, hieu he, thien he
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
thu xa » thu xac, thu ha, thu xe

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: te sach ky tang ma hoa. ((hiem he) OR (hieu ve)) nam thu xa ((danh sai) OR (dung sai)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky tang ma hoa. ((hiem he) or (hieu ve)) nam thu xa ((danh sai) OR (dung sai)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ky tang ma hoa. ((hiem he) or (hieu ve)) nam thu xa ((danh sai) OR (dung sai)) cua tre*.