Perhaps you should try some spelling variations:
thanh dat » thanh san, thanh hai, thanh van
hanh dai » hanh tai, vanh dai, thanh dam
hanh dao » lanh dao, thanh dam, doanh dao
sach ty » sach y, sach tu, sach thu
te sach » toc sach
cac tuc » cac toc, cac tu, cac tac
cuu tre » cua tre, cau tren, cau treo
tuc va » thuc va, truc va, tuc xa
xang x » nang x
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 ty xang x hoi. lieu va cac tuc va ((hanh dai) OR (((hanh dao) OR (thanh dat)))) cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty xang x hoi. lieu va cac tuc va ((hanh dai) or (((hanh dao) OR (thanh dat)))) cuu tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ty xang x hoi. lieu va cac tuc va ((hanh dai) or (((hanh dao) OR (thanh dat)))) cuu tre*.