Perhaps you should try some spelling variations:
tu cham » toc cham, thi cham
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
cham ky » pham ky, cam ky
ca tren » cau tren, cu tren, la tren
mai hoi » mai khoi, dai hoi, lai hoi
ve cac » va cac, vien cac
tuc va » thuc va, truc va, tuc xa
ma hoi » xa hoi, ma hoa, me hoi
ve cam » ve cham, va cam, ve cai
va ca » va cac, va cao, va cai

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: tu cham ky nang ((ma hoi) OR (mai hoi)). hieu ((ve cam) OR (ve cac)) tuc va hanh va ca tren~.
• Adding a wildcard symbol may retrieve word variants: tu cham ky nang ((ma hoi) or (mai hoi)). hieu ((ve cam) or (ve cac)) tuc va hanh va ca tren*.