Perhaps you should try some spelling variations:
hang vai » hang va, hang tai, hang hai
ban hang » ngan hang
su sach » so sach, vu sach
vu cham » va cham, vu kham, tu cham
vai cua » dai cua, hai cua, lai cua
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
ve cham » va cham, ve chat, ve chim
ky danh » ky anh
ky dang » ky nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ky dang) or (ky danh)) xa hoi. hieu ((ve cham) OR (vu cham)) xuc ban hang vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky dang) OR (ky danh)) xa hoi. hieu ((ve cham) OR (vu cham)) xuc ban hang vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky dang) or (ky danh)) xa hoi. hieu ((ve cham) OR (vu cham)) xuc ban hang vai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ((ky dang) or (ky danh)) xa hoi. hieu ((ve cham) OR (vu cham)) xuc ban hang vai cua tre*.