Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
ban hang » ngan hang
than cua » nhan cua, thai cua, ban cua
sach ky » sac ky, sach y, sach ty
cac cuu » cap cuu, cac cau, cac chu
cuu ban » cuu van, cua ban, cuu san
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang x hoi. lieu va cac cuu ban hang ((dai cua) or (than cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang x hoi. lieu va cac cuu ban hang ((dai cua) OR (than cua)) tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang x hoi. lieu va cac cuu ban hang ((dai cua) or (than cua)) tre*.