Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
kho tang » cao tang
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, lieu va
vu sach » vu bach, vu khach
tang ma » mang may, tang van
van lam » van nam
lam xuc » cam xuc, lam duoc
xuc van » duc van, luc van, vuc van
su sach » so sach
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet

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) or (((su sach) OR (vu sach)))) kho tang ma hoa. hieu van lam xuc van hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (((su sach) OR (vu sach)))) kho tang ma hoa. hieu van lam xuc van hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) or (((su sach) OR (vu sach)))) kho tang ma hoa. hieu van lam xuc van hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (((su sach) OR (vu sach)))) kho tang ma hoa. hieu van lam xuc van hanh vai cua tre*.