Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
hieu ve » hieu va, hieu van
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
tu sach » thu sach, te sach, tu cach
vu sach » vu bach, vu khach
su sach » so sach
cua tre » cua te, cuu tre, cua triet
ve nam » he nam, va nam, le nam
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: ((tu sach) or (((su sach) or (vu sach)))) ky nang x hoi. hieu ve nam thuc va hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (((su sach) OR (vu sach)))) ky nang x hoi. hieu ve nam thuc va hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (((su sach) or (vu sach)))) ky nang x hoi. hieu ve nam thuc va hanh di cua tre*.