Perhaps you should try some spelling variations:
thanh nhan » thanh phan, thanh san, thanh toan
dac nhan » cac nhan, danh nhan, ca nhan
cam thuc » am thuc, nam thuc, cam thu
day hanh » day nhanh, day thanh, dao hanh
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
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: su sach ky nang x hoi. hieu va 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: su sach ky nang x hoi. hieu va cam thuc ((day hanh) OR (((dac nhan) OR (thanh nhan)))) di cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu va cam thuc ((day hanh) or (((dac nhan) or (thanh nhan)))) di cua tre*.