Perhaps you should try some spelling variations:
dao thanh » ban thanh, tro thanh, de thanh
cam thuc » am thuc, nam thuc, cam thu
ban hanh » ban hang
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
sac ky » cac ky, sai ky
di cua » dai cua, doi cua, de cua
va sac » va cac, va suc, va san
5 hoi » o hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: va sac ky nang ((5 hoi) or (xa hoi)). hieu va cam thuc ((ban hanh) or (dao thanh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: va sac ky nang ((5 hoi) OR (xa hoi)). hieu va cam thuc ((ban hanh) OR (dao thanh)) di cua tre.
• Adding a wildcard symbol may retrieve word variants: va sac ky nang ((5 hoi) or (xa hoi)). hieu va cam thuc ((ban hanh) or (dao thanh)) di cua tre*.