Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ky nang ((xa hoi) or (ma hoa)). hieu ((ve cam) or (ve cac)) xuc va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang ((xa hoi) OR (ma hoa)). hieu ((ve cam) OR (ve cac)) xuc va hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sac ky nang ((xa hoi) or (ma hoa)). hieu ((ve cam) or (ve cac)) xuc va hanh dai cua tre*.