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