Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
ban hanh » ban hang
co sach » bo sach, cuon sach, hoc sach
hai cua » thai cua, dai cua, hoi cua
xuc ban » duc ban, cuc ban, quoc ban
van cam » van nam, van lam, van dam
van cau » van dau, van hau, van chat
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky danh
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach ((ky dang) or (ky nang)) xay hoi. hieu ((van cam) OR (van cau)) xuc ban hanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach ((ky dang) OR (ky nang)) xay hoi. hieu ((van cam) OR (van cau)) xuc ban hanh hai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co sach ((ky dang) or (ky nang)) xay hoi. hieu ((van cam) OR (van cau)) xuc ban hanh hai cua tre*".