Perhaps you should try some spelling variations:
dang xay » dang van, van xay
vu sach » vu bach, su sach, vu khach
vai cua » dai cua, hai cua, lai cua
coc ban » co ban, cac ban, hoc ban
loc ban » lo ban, hoc ban, hoc bang
sach ky » sac ky, sach y, sach ty
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
di cua » dai cua, doi cua, de cua

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: vu sach ky dang xay hoi. hieu ve cham ((loc ban) OR (coc ban)) thanh ((di cua) OR (vai cua)) te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky dang xay hoi. hieu ve cham ((loc ban) OR (coc ban)) thanh ((di cua) or (vai cua)) te~".
• Adding a wildcard symbol may retrieve word variants: vu sach ky dang xay hoi. hieu ve cham ((loc ban) OR (coc ban)) thanh ((di cua) or (vai cua)) te*.