Perhaps you should try some spelling variations:
xuc ban » cuc ban, quoc ban, xuat ban
hai cua » thai cua, hoi cua, lai cua
duc ban » duc tan, duc van, dua ban
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
va cham » va chat, va tham
hieu va » lieu va, hieu qua
nang co » nang cao, nang doc, nang noi
ty nang » ky nang, ty xang, ty hang
co loi » co hoi

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang co loi. hieu va cham ((xuc ban) OR (duc ban)) thanh ((dai cua) OR (hai cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang co loi. hieu va cham ((xuc ban) OR (duc ban)) thanh ((dai cua) or (hai cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang co loi. hieu va cham ((xuc ban) OR (duc ban)) thanh ((dai cua) or (hai cua)) tre*.