Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
phat day » phap day, phan day, phat am
phan dau » phan tu, hang dau
danh lai » danh sai, gianh lai, dinh lam
va danh » va dinh, va dan, va hanh
xang ma » tang ma, nang ma, sang ma
cua tre » cuu tre, cua triet, dua tren
sach ty » sach y, sach tu, sach thu
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

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: toc sach ty xang ma hoi. hieu van ((phat day) OR (phan dau)) va danh lai ((cua tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty xang ma hoi. hieu van ((phat day) OR (phan dau)) va danh lai ((cua tre) or (cua te))~".
• Adding a wildcard symbol may retrieve word variants: toc sach ty xang ma hoi. hieu van ((phat day) OR (phan dau)) va danh lai ((cua tre) or (cua te))*.