Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
va hanh » van hanh, va thanh, va danh
cua tre » cuu tre, cua triet, dua tren
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, xach tay
cam tuc » cam xuc, cam tu, nam thuc
hanh va » hang va, hanh vi
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach ty) or (sach thu)) lang xa hoi. hieu va cam tuc va hanh va ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach ty) OR (sach thu)) lang xa hoi. hieu va cam tuc va hanh va ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: toc ((sach ty) or (sach thu)) lang xa hoi. hieu va cam tuc va hanh va ((cua tre) or (cua te))*.