Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
khach ky » hanh ky, thanh ky
mai khoi » mai khoa, tai khoa, cac khoi
nuoc may » nuoc my, nuoc mat, nuoc man
tinh hai » tinh thai, tinh chat, trinh han
hieu ve » hieu va, hieu van
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
ve hoc » te hoc, va hoc, vi hoc

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 khach ky nang ((((mai khoi) OR (xa hoi))) OR (ma hoa)). hieu ve hoc nuoc may tinh hai cua tre~.
• Adding a wildcard symbol may retrieve word variants: vu khach ky nang ((((mai khoi) or (xa hoi))) or (ma hoa)). hieu ve hoc nuoc may tinh hai cua tre*.