Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cham loc » cham soc, chon loc, cham o
vu khach » vu khanh, vu khac, vay khach
dang xay » dang van, van xay
vu sach » vu bach, su sach
vai cua » dai cua, hai cua, lai cua
loc ban » lo ban, hoc ban, coc ban
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
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) OR (vu khach)) ky dang xay hoi. hieu ve cham loc ban thanh ((vi cua) or (vai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu khach)) ky dang xay hoi. hieu ve cham loc ban thanh ((vi cua) OR (vai cua)) te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (vu khach)) ky dang xay hoi. hieu ve cham loc ban thanh ((vi cua) or (vai cua)) te*".