Perhaps you should try some spelling variations:
hieu cao » chieu cao, hieu cac, hieu ca
chat xuc » chat huu, cam xuc, chao xu
thanh vi » thanh va, thanh ve, nhanh vi
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
xuc ban » duc ban, cuc ban, quoc ban
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: so sach ty nang ((x ho) or (xa hoi)). hieu cao chat xuc ban ((thanh vi) OR (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang ((x ho) OR (xa hoi)). hieu cao chat xuc ban ((thanh vi) OR (hanh vi)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang ((x ho) or (xa hoi)). hieu cao chat xuc ban ((thanh vi) OR (hanh vi)) cua tre*".