Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
van tuan » van quan, van ban, anh tuan
tuan vi » quan vi, luan vi, quans vi
van bao » van ban, van dao
van bac » van ban, van hac, dan bac
cua tre » cua te, cuu tre, cua triet
so van » su van, vo van
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) OR (toc sach)) y nang x hoi. hieu ((van bac) or (van bao)) so van tuan vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) y nang x hoi. hieu ((van bac) OR (van bao)) so van tuan vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) y nang x hoi. hieu ((van bac) or (van bao)) so van tuan vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) y nang x hoi. hieu ((van bac) or (van bao)) so van tuan vi cua tre*.