assistance
Let me know if there is anything I can do to be of assistance.
If you have a gambling problem, there are several support groups that may be of assistance.
This clever new invention will surely be of great assistance to blind people.

SMART Vocabulary: related words and phrases

Helping and co-operating
abet
accommodative
any port in a stormidiom
assist
assist with something
attend
bridge
carry
errand of mercyidiom
facilitate
facilitation
financial assistance
give someone a leg upidiom
leg
recourse
relief
run errandsidiom
share a platformidiom
sponsor
start (something) off