Perhaps you should try some spelling variations:
thanh ha » thanh hoa, thanh hai, nhanh ha
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
ty nang » ky nang, ty xang, ty hang
ve cai » va cai, ve cac, ve tai
xuc va » duc va, tuc va, luc va
va cao » va cac, va co, va dao
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 ty nang x hoi. hieu ((ve cai) or (va cao)) xuc va ((hanh vi) or (thanh ha)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. hieu ((ve cai) OR (va cao)) xuc va ((hanh vi) OR (thanh ha)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. hieu ((ve cai) or (va cao)) xuc va ((hanh vi) or (thanh ha)) cua tre*.