KeyWord Match in Document Extraction

Hi ,

I am using Appian Doccentre to look for few of the keyword to set one of the variable value. In my model I have created a field and given description/prompt to look for few of the keyword and if those found, then setting that new field value to those keywords in a comma separated way. The issue is, I am able to find few of the keywords but unable to find some although those are there in the document. I have tried giving all possible prompt but still unable to get those keywords. Did anyone find any such issue ? Any help is really appreciated.

I am giving my prompt something like this..

From ONLY this list: ["abc","def","pqr"], return a comma-separated list of those found anywhere (case-insensitive). Match whole words; treat “claims” as “claims”. Include headers, footers, labels, and stamps.

Regards,

Ghanashyam