Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
cua tre » cua te, cua triet, dua tren
cuc ban » cua ban, cac ban, cuu ban
cuu tre » cau tren, cau treo
xuc ban » duc ban, quoc ban, xuat ban
van cau » van dau, van hau, van chat
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano

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 tu nang xa hoi. hieu van cau ((xuc ban) or (cuc ban)) hanh vi ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu nang xa hoi. hieu van cau ((xuc ban) OR (cuc ban)) hanh vi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tu nang xa hoi. hieu van cau ((xuc ban) or (cuc ban)) hanh vi ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach tu nang xa hoi. hieu van cau ((xuc ban) or (cuc ban)) hanh vi ((cua tre) OR (cuu tre))*.