Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
hieu van » thien van, lieu va, hieu ve
thanh vi » hanh vi, thanh va, thanh ve
toc sach » hoc sach, doc sach, thuoc sach
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
xang x » nang x
bo van » vo van, so van, do van
vi cuu » vi luu, vinh cuu
x hoi » xa hoi, o hoi, x ho

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 (toc sach)) ty xang x hoi. ((hieu van) OR (hieu va)) bac bo van thanh vi cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) ty xang x hoi. ((hieu van) OR (hieu va)) bac bo van thanh vi cuu tre~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ty xang x hoi. ((hieu van) OR (hieu va)) bac bo van thanh vi cuu tre*.