Perhaps you should try some spelling variations:
hanh hoai » thanh hoai, hanh hoa, nhanh hoan
hoai cua » hoi cua, hoa cua, hai cua
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
va cach » va cac
dua ban » cua ban, qua ban, mua ban
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
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 y nang x hoi. hieu va cach ((dua ban) OR (dia ban)) hanh hoai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang x hoi. hieu va cach ((dua ban) OR (dia ban)) hanh hoai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu va cach ((dua ban) OR (dia ban)) hanh hoai cua tre*.