Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
chat huu » pham huu
thanh ve » hanh ve, thanh va, thanh vien
tu cach » tu cac
co sach » bo sach, cuon sach, hoc sach
hieu du » hien du, hieu su, hiem du
du chat » duoc chat, dung chat, doc chat
huu van » cuu van, huu han, luu van
cua tre » cua te, cuu tre, cua triet
ve cua » le cua, de cua, te cua
x hoi » xa hoi, o hoi, 5 hoi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (co sach)) ky nang ((x hoi) or (x ho)). hieu du chat huu van thanh ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (co sach)) ky nang ((x hoi) OR (x ho)). hieu du chat huu van thanh ve cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (co sach)) ky nang ((x hoi) or (x ho)). hieu du chat huu van thanh ve cua tre*.