Use OR boolean logic in URL searches for observation field values

Platform(s), website

URLs (aka web addresses) of any pages, if relevant:

Description of need:
To include searches that can choose whether they have one field value OR the other, rather than AND.

Feature request details:
Currently in the url we can stitch together different field values or anything else with &, it would be nice to include either or.

For Example: I would like to make a search that will show results that have ‘DNA Barcode ITS’ field values OR ‘DNA sequence’ values.

I approved this request but after some discussion with our devs, this would be pretty complex so I’m not going to make any promises as far as implementation goes.