how to add custom fields in azure search

Question

Scenario:

Blob storage: contains pdf, word, image files (about 70 files)

I used default fields and predefined skills to create an Azure search instance through the Azure Portal.

But the results for querying any text in these files is not very good. I made content and key phrases as searchable and retrievable. I tried to use Lucene analyzers but was not a great help.

The main concern is if I type even a letter for example "u" in the search explorer, it returns the file. as per my understanding, there is no such word in my files. so what is it doing?

How to refine the search? and also how to manipulate the result?

I am not an expert in document processing. So using the unstructured documents in the blob instead of JSON formatted documents.

another thing, how to define some field in the index, let's say chapter-name or title name which can relate to the PDF chapters/title name?

Please suggest me some ideas or some example links. I am using .net core to develop this.

Answer 1

use custom skill set to extract the fields which you required and make sure those fields are defined in index.