If you use DuckDuckGo as your search engine you use the bangs that you add to your query, e.g.

  !w bang

searches for bang on Wikipedia. The list of bangs can be found here [0]

python: !python !python2 !python3

Postgresql: !postgres

Flask: !flask

SQLAlchemy: !sqlalchemy

Rust: !rust

Javascript: !javascript

CSS: !css

Currently there are 13,564 bangs and you can suggest new ones.

[0] https://duckduckgo.com/bang