Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hieu van » thien van, lieu va, hieu ve
hanh lai » hanh lam, hanh tai, thanh lap
tang van » dang van, hoang van, trong van
hieu va » lieu va, hieu qua
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
cau xuc » cam xuc, cau luc, cau truc
te sach » toc sach
van hoc » van hoa
ky tang » ky nang, ky dang, kho tang
xuc va » duc va, tuc va, luc va
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: ((te sach) OR (thuoc sach)) ky tang van hoc. ((hieu van) OR (hieu va)) cau xuc va hanh lai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thuoc sach)) ky tang van hoc. ((hieu van) OR (hieu va)) cau xuc va hanh lai cua te~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuoc sach)) ky tang van hoc. ((hieu van) OR (hieu va)) cau xuc va hanh lai cua te*.