Perhaps you should try some spelling variations:
danh nhan » doanh nhan, thanh nhan, benh nhan
cai thuc » can thuc, cay thuc, dai thuc
day hanh » day nhanh, day thanh, dao hanh
cac nhan » ca nhan, cac nha, cam nhan
bach ky » bac ky
qua cai » qua hai, qua cac, qua ca
cua tre » cua te, cuu tre, cua triet
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu bach ky nang x hoi. hieu qua cai thuc ((day hanh) or (((cac nhan) or (danh nhan)))) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu bach ky nang x hoi. hieu qua cai thuc ((day hanh) OR (((cac nhan) OR (danh nhan)))) di cua tre.
• Adding a wildcard symbol may retrieve word variants: vu bach ky nang x hoi. hieu qua cai thuc ((day hanh) or (((cac nhan) or (danh nhan)))) di cua tre*.