Perhaps you should try some spelling variations:
qua cam » qua cham, qua ca, qua cai
qua cac » cua cac
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, cua triet
so sac » so sach, so dac
sac ky » cac ky, sai ky
vi cua » vai cua, di cua
x hoi » xa hoi, x ho, 5 hoi
o hoi » co hoi, o hoc, o hai

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: so sac ky nang ((x hoi) OR (o hoi)). hieu ((qua cam) OR (qua cac)) duc va danh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sac ky nang ((x hoi) OR (o hoi)). hieu ((qua cam) or (qua cac)) duc va danh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: so sac ky nang ((x hoi) OR (o hoi)). hieu ((qua cam) or (qua cac)) duc va danh vi cua tre*.