Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
van thanh » ban thanh, van tuan
thanh dam » thanh dat, thanh nam, thanh tam
hieu van » hieu va, thien van, lieu va
lam thuc » lam thuoc, am thuc, nam thuc
thuc van » thuc vat, thuc dan, thuc va
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
van lam » van nam
dam cua » dai cua, day cua, nam cua
cua tre » cua te, cuu tre, cua triet

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu hoach) or (thuoc sach)) ty nang xa hoi. hieu van lam thuc van thanh dam cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu hoach) OR (thuoc sach)) ty nang xa hoi. hieu van lam thuc van thanh dam cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thu hoach) or (thuoc sach)) ty nang xa hoi. hieu van lam thuc van thanh dam cua tre*.