Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hang tai » hang va, dung tai
so sach » so sanh, bo sach, hoc sach
co sach » bo sach, cuon sach, hoc sach
xang xa » lang xa, mang xa, ang xa
van hau » van ha, van hai, van dau
hau xuc » chat xuc
xuc van » duc van, luc van, vuc van
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) OR (co sach)) ty xang xa hoi. hieu van hau xuc van ((hang tai) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (co sach)) ty xang xa hoi. hieu van hau xuc van ((hang tai) OR (hanh vi)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (co sach)) ty xang xa hoi. hieu van hau xuc van ((hang tai) or (hanh vi)) cua tre*".