[FX.php List] How do we perform the equivalent of multiple find requests?

[Malcolm Fitzgerald]

I want to combine two searches, both of which have multiple criteria. In filemaker itself it would be easy, two find requests. 

I want to find all records where  "id = a AND date_1=a ... b" OR "id=a AND date_2=a...b". 

Is the solution to do two separate searches and combine the results or is there a better way?

Malcolm