Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
van hanh » van thanh, ban hanh, van ban
qua cam » qua cac, qua ca, qua cai
van anh » van thanh, tuan anh, van minh
su dan » su dang, cu dan, so dan
dan ky » van ky
vi cua » vai cua, di cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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: su dan ky nang x hoi. hieu ((qua cam) OR (qua cham)) xuc ((van hanh) OR (van anh)) vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su dan ky nang x hoi. hieu ((qua cam) OR (qua cham)) xuc ((van hanh) or (van anh)) vi cua te~".
• Adding a wildcard symbol may retrieve word variants: su dan ky nang x hoi. hieu ((qua cam) OR (qua cham)) xuc ((van hanh) or (van anh)) vi cua te*.