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Renamed function get_filtered_results

Configure searxng with language param set to auto and add "safesearch": 1 (moderate) for safer web results.

Accept additional parameters such as language, time_range, and categories to tailor the search results.
Raise an exception if a request error occurs during the search process.
Use params argument to construct the query string
Sort by relevance
Expand docstring

fix: google PSE endpoint uses GET

fix: google PSE returns link, not url

fix: serper wrong field