Do different results for these searches prove censorship?

Not much from one comparison. Search results can shift with location, language, account settings, past activity, and the exact wording. First make sure you are comparing the same kind of result, such as autocomplete suggestions with autocomplete suggestions, or regular results with regular results.

For a stronger test, repeat both searches in the same settings and location, record what appears, and try again later. Even a consistent difference would show a difference in results, not by itself explain why it happened or prove deliberate censorship.

There could be a real moderation or ranking decision behind a difference, but the screenshot or search result alone does not tell you that. The phrases may be interpreted differently, and the pages available or considered relevant can differ too. A claim about intent needs more evidence than two queries.

Also worth separating “the search engine gives different answers” from “the search engine prevents the query.” If both phrases can be entered and results appear, the difference may be about what gets surfaced, not a ban. That can still be worth investigating, just describe precisely what you observed.