Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
van hang » van khang, van hoang, van thang
cac xuc » cac nuoc, chat xuc, cac cuoc
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
ky dang » ky nang, ky danh
cua tre » cua te, cuu tre, cua triet
me hoi » le hoi
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: nuoc sach ky dang ((me hoi) or (xa hoi)). hieu ve ((cac xuc) or (cam xuc)) van hang va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc sach ky dang ((me hoi) OR (xa hoi)). hieu ve ((cac xuc) OR (cam xuc)) van hang va cua tre.
• Adding a wildcard symbol may retrieve word variants: nuoc sach ky dang ((me hoi) or (xa hoi)). hieu ve ((cac xuc) or (cam xuc)) van hang va cua tre*.