Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
nam thuc » nam thuoc, am thuc, nam thu
thanh ve » hanh ve, thanh va, thanh vien
thanh vi » hanh vi, thanh va, nhanh vi
thuc va » thuc vat, thuc dan, thuc day
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
va nam » van nam, ha nam, va nay
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 (thuat lanh)) ky nang x hoi. hieu va nam thuc va ((thanh vi) or (thanh ve)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat lanh)) ky nang x hoi. hieu va nam thuc va ((thanh vi) OR (thanh ve)) cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat lanh)) ky nang x hoi. hieu va nam thuc va ((thanh vi) or (thanh ve)) cua tre*.