Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh tai » thanh tai, hang tai, han tai
xuc van » duc van, luc van, vuc van
cau xuc » cam xuc, cau luc, cau truc
sach ty » sach tu, sach thu, xach tay
van cau » van dau, van hau, van chat
cua tre » cua te, cuu tre, cua triet
xang ma » tang ma, nang ma, sang ma
ma hoi » mai hoi, xa hoi, ma hoa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach ty) OR (sach y)) xang ma hoi. hieu van cau xuc van ((hanh tai) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach y)) xang ma hoi. hieu van cau xuc van ((hanh tai) OR (hanh vi)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) OR (sach y)) xang ma hoi. hieu van cau xuc van ((hanh tai) or (hanh vi)) cua tre*".