Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
phan duc » pham duc, phan tu, phan dau
doc sach » hoc sach, toc sach, nuoc sach
van hanh » ban hanh, van anh, van ban
te sach » toc sach
ve phan » va phan, ke phan, ve phat
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
va cua » va chua, via cua, ca 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 (doc sach)) ky nang x hoi. hieu ve phan duc ((van hanh) OR (van thanh)) va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (doc sach)) ky nang x hoi. hieu ve phan duc ((van hanh) OR (van thanh)) va cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (doc sach)) ky nang x hoi. hieu ve phan duc ((van hanh) OR (van thanh)) va cua tre*".