Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh dam » thanh dat, thanh nam, thanh tam
cap nuoc » dat nuoc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » hieu qua
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: tu sach ky nang xa hoi. ((hieu va) or (lieu va)) ((cap nuoc) or (hoc nuoc)) van thanh dam cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. ((hieu va) OR (lieu va)) ((cap nuoc) OR (hoc nuoc)) van thanh dam cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. ((hieu va) or (lieu va)) ((cap nuoc) or (hoc nuoc)) van thanh dam cua tre*.