Perhaps you should try some spelling variations:
thanh va » thanh van, hanh va, thanh ha
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
xuc va » duc va, tuc va, luc va
ve cai » va cai, ve cac, ve tai
va cao » va cac, va co, va dao

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 ((ve cai) or (va cao)) xuc va ((hanh vi) or (thanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ((ve cai) OR (va cao)) xuc va ((hanh vi) OR (thanh va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu ((ve cai) or (va cao)) xuc va ((hanh vi) or (thanh va)) cua tre*.