Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh le » thinh le, thanh ve, thanh de
su sach » so sach
vu sach » vu bach, vu khach
hieu ve » hieu va, hieu van
xuc ban » duc ban, cuc ban, quoc ban
cuu tre » cua tre, cau tren, cau treo
ve cam » ve cham, ve cac, va cam
le cuu » le cua, le huu, le cau
x hoi » o hoi, x ho, 5 hoi

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) OR (vu sach)) ky nang ((x hoi) or (xa hoi)). hieu ve cam xuc ban thanh le cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky nang ((x hoi) OR (xa hoi)). hieu ve cam xuc ban thanh le cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ky nang ((x hoi) or (xa hoi)). hieu ve cam xuc ban thanh le cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) ky nang ((x hoi) or (xa hoi)). hieu ve cam xuc ban thanh le cuu tre*.