Perhaps you should try some spelling variations:
chat duc » chat xuc, chat doc, chet duoc
tu cach » tu cac
so sach » so sanh, bo sach, co sach
hieu vu » hieu va, hieu ve, hieu su
vu chat » va chat, ve chat, du chat
duc van » duc va, duc tan, duc manh
van anh » van thanh, tuan anh, van minh
cua tre » cua te, cuu tre, cua triet
anh ve » hanh ve, anh va, anh viet
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 (so sach)) ky nang ((x hoi) or (x ho)). hieu vu chat duc van anh ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (so sach)) ky nang ((x hoi) OR (x ho)). hieu vu chat duc van anh ve cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (so sach)) ky nang ((x hoi) or (x ho)). hieu vu chat duc van anh ve cua tre*.