When I had a professional site I was aware of searches on -

virtual + any of the following:
secretary
administration
office
assistance
support
help

Also,
remote professional

offsite +
assistance
help
assistant

And any combination of the above that you can imagine.

Also, lots of searches for
'find virtual assistant'
'professional virtual assistant'
'virtual administration'

Unfortunately there isn't much variation on the 'virtual assistant' angle, but maybe someone else has some input to offer based on their own experience.

I think this is where niching/industry focus becomes particularly important - working in keywords that will narrow your own focus and will also help internet searchers find you for a specific need (ie - editing services, public relations, real estate, etc.)

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