Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
qua cham » qua hai, qua cac, va cham
thanh va » thanh van, hanh va, thanh ha
cua tre » cua te, cuu tre, cua triet
cham o » cham soc
va cua » va chua, via cua, ca cua
x hoi » xa hoi, o hoi, 5 hoi
o ban » co ban, lo ban, do ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang ((x hoi) or (x ho)). hieu qua cham o ban thanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ((x hoi) OR (x ho)). hieu qua cham o ban thanh va cua tre.
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((x hoi) or (x ho)). hieu qua cham o ban thanh va cua tre*.