Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
vu sach » vu bach, su sach
xay hoi » xa hoi, tay hoi, cay phoi
ve cac » va cac, vien cac
vi cua » vai cua, di cua
ve cam » ve cham, va cam, ve cai
ky van » ly van, ty van, ky va
cua te » cua tu

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) OR (vu khach)) ky van xay hoi. hieu ((ve cam) OR (ve cac)) duc va thanh vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (vu khach)) ky van xay hoi. hieu ((ve cam) OR (ve cac)) duc va thanh vi cua te~".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (vu khach)) ky van xay hoi. hieu ((ve cam) OR (ve cac)) duc va thanh vi cua te*.