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
hoc ban » hoc bang, hoc dan, hoc bai
loc ban » lo ban, coc 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
vi cua » di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky dang xay hoi. hieu ve cham ((loc ban) OR (hoc ban)) thanh ((vi cua) or (vai cua)) te~.
• 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 (hoc ban)) thanh ((vi 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 (hoc ban)) thanh ((vi 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 (hoc ban)) thanh ((vi cua) or (vai cua)) te*.