Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, hieu ve
ban banh » ban hanh, ban anh, ban danh
tu sach » thu sach, su sach, te sach
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cua triet, dua tren
banh vi » hanh vi, ban vi, benh vi
lam xuc » cam xuc, lam duoc
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
cuu tre » cau tren, cau treo
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 van) or (lieu va)) lam xuc ban banh vi ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. ((hieu van) OR (lieu va)) lam xuc ban banh vi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang x hoi. ((hieu van) or (lieu va)) lam xuc ban banh vi ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. ((hieu van) or (lieu va)) lam xuc ban banh vi ((cua tre) OR (cuu tre))*.