Remember two things when searching
1 - computers are stupid but quick
2 - the mother's full name often is not given in baptismal records.

So, when I'm, looking for a family on the IGI I put in the father's name and only the mother's forename.

If I have a fairly accurate idea of the marriage, then I will set the date range to start about 2 years before the marriage and ending 20 years later.

I use 2 yers before marriage because any children born up to 2 years before the parents married were usually considered legitimate,