Perhaps you should try some spelling variations:
van tuan » van quan, van ban, anh tuan
te sach » toc sach
van bac » van ban, van hac, dan bac
van bao » van ban, van dao
tuan vi » quan vi, luan vi, quans vi
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
bo van » vo van, so van, do van
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 y nang x hoi. hieu ((van bac) or (van bao)) bo van tuan vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. hieu ((van bac) OR (van bao)) bo van tuan vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu ((van bac) or (van bao)) bo van tuan vi cua tre*.