Keyword proximity in Open text fields

I don't know what you mean by "the open text fields."  Do you mean editable sections?  And by "filter" do you mean some kind of watchdog on what the user enters? Please give a more detailed description of the feature you're looking for.

Hi Aslihan

I believe you maybe looking for some kind of predictive text fields form, I mean for example When the lead is typing in their company name, a list companies appear in a picklist that the lead can select. This appends company data to the record in CRM/Marketo.

This is not available in Marketo

However there a number of companies within the launch-point partnerships that offer that service, all with access to different data sets depending on the field.

Thanks
Juan

Thanks @Juan Ngomo​.

The issue that i am trying to solve is under comments area and potentially in the Job title area. These are open fields that a user can provide any data they want. So basicly I am trying to see if I can apply a filter that looks for specific keywords and their proximity to each other.