Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
hai chuc » hoi chuc, hai chu, hai cuc
van hanh » van thanh, ban hanh, van anh
ve triet » va trien, su triet
vu sach » vu bach, su sach
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
qua hai » qua hoat
va hanh » va thanh, va danh, ban hanh
vi ve » va ve, gi ve, ve ve

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 dang xa hoi. hieu qua hai chuc ((va hanh) OR (van hanh)) vi ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (vu khach)) ky dang xa hoi. hieu qua hai chuc ((va hanh) OR (van hanh)) vi ve triet~".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (vu khach)) ky dang xa hoi. hieu qua hai chuc ((va hanh) OR (van hanh)) vi ve triet*.