need help for this sentence

[maitian]

Please help with this sentence, is it the right sentence or not, I am so bad at English. thank you very much.

During such a short time, we may not be able to see good effects from less volunteering. I realized that helping others doesn't equate to spending money. The same, if not more, could be done by using our talents and spending time with those in long term volunteering.

[Syaaaa]

Well,i'm also bad in english but as far as i know,
You need to write to spend rather than to spending