– hl=en → force language of results to be in English, otherwise Google regularly prioritizes other languages.

– gl=us → force location to the US.

– nfpr=1 → stop autocorrecting “““typos”””. Google doesn't always respect quotation marks unfortunately.

– verbatim=1 → search as is, it complements nfpr=1.

– pws=0 → disable personalization.

– filter=0 → stop “filter[ing] out some of the results for a given search” in order to “enhance the user experience”[1][2].

– tbs=li:1 → stop including other forms. e.g. without it searching for “test” also returns results that contain “testing”.

– udm=14 → disable AI-augmented features.

– q=%s → the query itself!

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[1] http://www.google.com/apis/reference.html (dead)

[2] Mirror: https://web.archive.org/web/20021201103155/http://www.google... (section 2.3, “Automatic Filtering”)