Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
ban thanh » ban hanh, ban hang
tu sach » thu sach, su sach, te sach
va cach » va cac
hai cua » thai cua, dai cua, hoi cua
dua ban » dia ban, cua ban, qua ban
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
ve cach » ve canh
ve cac » va cac, vien cac
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 ky nang x hoi. hieu ((((ve cach) OR (ve cac))) or (va cach)) dua ban thanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu ((((ve cach) OR (ve cac))) OR (va cach)) dua ban thanh hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu ((((ve cach) OR (ve cac))) or (va cach)) dua ban thanh hai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu ((((ve cach) OR (ve cac))) or (va cach)) dua ban thanh hai cua tre*.