Perhaps you should try some spelling variations:
thanh nhan » thanh phan, thanh san, thanh toan
cam thuc » am thuc, nam thuc, cam thu
day hanh » day nhanh, day thanh, dao hanh
dac nhan » cac nhan, danh nhan, ca nhan
bach ky » bac ky
qua cam » qua cham, 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 cam thuc ((day hanh) or (((dac nhan) or (thanh 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 cam thuc ((day hanh) OR (((dac nhan) OR (thanh nhan)))) di cua tre.
• Adding a wildcard symbol may retrieve word variants: vu bach ky nang x hoi. hieu qua cam thuc ((day hanh) or (((dac nhan) or (thanh nhan)))) di cua tre*.