Perhaps you should try some spelling variations:
gianh lai » gian lan
danh lai » danh sai, dinh lam, hanh lam
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
hieu he » hiem he, hieu le, hieu hien
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.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky tang ma hoa. ((hieu he) or (hieu ve)) nam thu xa ((danh lai) OR (gianh lai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky tang ma hoa. ((hieu he) OR (hieu ve)) nam thu xa ((danh lai) OR (gianh lai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky tang ma hoa. ((hieu he) or (hieu ve)) nam thu xa ((danh lai) OR (gianh lai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky tang ma hoa. ((hieu he) or (hieu ve)) nam thu xa ((danh lai) OR (gianh lai)) cua tre*.