Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
van thanh » ban thanh, van tuan
thanh di » thanh doi, thanh de, thanh do
sach ty » sach y, sach tu, sach thu
sang ma » tang ma, nang ma, sang tao
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
cua tre » cuu tre, cua triet, dua tren
ve cam » ve cham, ve cac, va cam
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: thuoc sach ty ((sang ma) or (van xay)) hoi. hieu ve cam xuc van thanh di ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ty ((sang ma) OR (van xay)) hoi. hieu ve cam xuc van thanh di ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ty ((sang ma) or (van xay)) hoi. hieu ve cam xuc van thanh di ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ty ((sang ma) or (van xay)) hoi. hieu ve cam xuc van thanh di ((cua tre) OR (cua te))*.