Perhaps you should try some spelling variations:
van thanh » van tuan
ban thanh » ban hanh, ban hang
cua tre » cua te, cua triet, dua tren
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
cau xuc » cam xuc, cau luc, cau truc
hieu va » lieu va, hieu qua
xang xa » lang xa, mang xa, ang xa
cuu tre » cau tren, cau treo
va cau » van cau, va cac, va dau

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 ty xang xa hoi. hieu va cau xuc ((van thanh) or (ban thanh)) vai ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty xang xa hoi. hieu va cau xuc ((van thanh) OR (ban thanh)) vai ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty xang xa hoi. hieu va cau xuc ((van thanh) or (ban thanh)) vai ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty xang xa hoi. hieu va cau xuc ((van thanh) or (ban thanh)) vai ((cua tre) OR (cuu tre))*.