Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
duc manh » suc manh, duc anh, duc minh
sach le » cach le, sach de, sach lo
le lang » le tang, le dang, le xang
van hoc » van hoa
thi van » thi lan, thi hanh, thi nang
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach le lang ((van loi) or (van hoc)). thi van nam ((xuc van) or (duc manh)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach le lang ((van loi) OR (van hoc)). thi van nam ((xuc van) OR (duc manh)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach le lang ((van loi) or (van hoc)). thi van nam ((xuc van) or (duc manh)) hanh vi cua tre*.