Perhaps you should try some spelling variations:
ban manh » ban hanh, van manh, ban mach
manh hai » lanh hai, minh hai, thanh hai
so sach » so sanh, bo sach, co sach
ky dang » ky danh
van cam » van nam, van cau, van dam
van lam » van nam
xuc ban » duc ban, cuc ban, quoc ban
hai cua » thai cua, dai cua, hoi cua
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: so sach ((ky dang) OR (ky nang)) xa hoi. hieu ((van cam) or (van lam)) xuc ban manh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((ky dang) OR (ky nang)) xa hoi. hieu ((van cam) OR (van lam)) xuc ban manh hai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((ky dang) OR (ky nang)) xa hoi. hieu ((van cam) or (van lam)) xuc ban manh hai cua tre*".