Search is limited within current location

Based on my understanding GeoDirectory search is done within current location, but this brings my users lots of inconvenience.

For example, one user lives in San Fransisco and there’s no problem for him to search anything around San Fransisco. However when he tries to search something around San Diego, the results always show nothing. He has to change the location to everywhere in order to get some reasonable information. So is there anyway that we could remove the location limitation on the search?

More specifically, here is what I like to achieve.
Step 1. Website accurately detects user current location (GeoDir did really well!).
Step 2. User is free to search anything near anywhere without be limited in current location.

Thanks.

Ros