Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
thuc day » thuc dan, thuc vat
su sach » so sach, vu sach
thuc va » thuc vat, thuc dan
vai cuu » vai cua
bo sach » co sach, hoc sach
cuu tre » cua tre, cau tren, cau treo
qua ca » qua cac, qua cua, qua cai
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) or (bo sach)) ky nang x hoi. hieu qua ca ((thuc va) or (thuc day)) hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (bo sach)) ky nang x hoi. hieu qua ca ((thuc va) OR (thuc day)) hanh vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (bo sach)) ky nang x hoi. hieu qua ca ((thuc va) or (thuc day)) hanh vai cuu tre*.