Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
van doanh » toan doanh, van dong, van thanh
va doanh » vay doanh, va danh, hoa doanh
sach ty » sach y, sach tu, sach thu
ty sang » ty xang, ty hang, duy sang
sang ma » tang ma, nang ma, sang tao
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa

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 hoi. hieu va cac xuc ((va doanh) OR (van doanh)) tai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ty sang ma hoi. hieu va cac xuc ((va doanh) OR (van doanh)) tai cua tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ty sang ma hoi. hieu va cac xuc ((va doanh) OR (van doanh)) tai cua tre*.