Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
chat soc » cham soc, chat hoc, chat doc
hang dai » hoang dai, hang tai, hang hai
hang dau » hang va, hang tai
van chat » cao chat
cuu tre » cua tre, cau tren, cau treo
soc ban » hoc ban, coc ban, so ban
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
cua te » cua tu

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 tu ((hang dai) OR (hang dau)) hoi. hieu van chat soc ban thanh lap ((cuu tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu ((hang dai) OR (hang dau)) hoi. hieu van chat soc ban thanh lap ((cuu tre) or (cua te))~".
• Adding a wildcard symbol may retrieve word variants: te sach tu ((hang dai) OR (hang dau)) hoi. hieu van chat soc ban thanh lap ((cuu tre) or (cua te))*.