Does case:yes make Google Search case-sensitive?

Question

I'm not duplicating this because it's from 2010 and doesn't mention case:yes. Enabling case-sensitive searches  |  Code Search  |  Google Developers

But case:yes "unclear is if" didn't work?

Answer 1

The link you are referring to "Enabling case-sensitive searches | Code Search | Google Developers" is about searching the code within your projects and not about Google Search.
As stated within the page:

To get started, open the Code Search UI for your project

• Android
• Chromium
• Other Google Projects: Google Open Source

Google Search is case insensitive:

Tip 4: Don’t worry about the little things

• Spelling. Google's spell checker automatically uses the most common spelling of a given word, whether or not you spell it correctly.
• Capitalization. A search for New York Times is the same as a search for new york times.