Pigro APIs do not require you to do further configurations and complicated parameter settings. There are a couple of settings however that you could change to better fit your use-case.

The first one is the language: this is very important for the search to work properly with your documents. It is mandatory to update your language before uploading your documents otherwise you must reimport your whole library.

Languages supported: English, Spanish, French, Portuguese, German, Italian, Dutch, Russian, Polish.

You can do that by specifying the language setting in the Update Settings API:

{
  "settings": {
    "language": "en"
  }
}

You can see the list of the correspondent language abbreviations in the API documentation.

The other setting you can customize is whether to use alias or not. To better understand how to specify the alias dictionary and its meaning check the Guide

{
  "settings": {
    "use_alias": True
  }
}

If you set the use of alias to False after importing your own alias_dictionary the alias terms will be ignored in your searches.