How to search a text placed in description of charges

I’m using search (search all) api to search for post code placed in description of Charges. Not getting desired result. I see most of the search results matching either title or address only not charges.

I don’t think you can search charges or text within them. The documentation lists what search endpoints there are - company, officer, disqualified officer and all (searches those three together):

Also for (some) explanation of how the search works see the announcement (2016!) of the current search facility:

… and also a quick overview of search:

Thank you . Is their any commercial product available for the same ?