Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
nhanh vi » hanh vi, nhanh va, nhanh thi
khanh vi » hanh vi, khanh v, khang vi
sach ky » sac ky, sach y, sach ty
cao duc » dao duc, cao suc, giao duc
cao xuc » cam xuc, cao suc, chat xuc
nang xa » nang x, lang xa, nang ma
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 sach ky nang xa hoi. hieu qua ((cao xuc) or (cao duc)) xa ((khanh vi) OR (nhanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. hieu qua ((cao xuc) OR (cao duc)) xa ((khanh vi) OR (nhanh vi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang xa hoi. hieu qua ((cao xuc) or (cao duc)) xa ((khanh vi) OR (nhanh vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. hieu qua ((cao xuc) or (cao duc)) xa ((khanh vi) OR (nhanh vi)) cua tre*.