Added google products notes to the knowledge base

knowledge base/google chrome.md

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+# Google Chrome
+
+## Gotchas
+
+### No "Proceed Anyway" option on NET::ERR_CERT_INVALID in Chrome on MacOS
+
+See [No "Proceed Anyway" option on NET::ERR_CERT_INVALID in Chrome on MacOS] for more information.
+
+There's a secret passphrase built into the error page. Just make sure the page is selected (click anywhere on the screen), then just type `thisisunsafe` and wait for the page to reload.
+
+## Further readings
+
+- [No "Proceed Anyway" option on NET::ERR_CERT_INVALID in Chrome on MacOS]
+
+[no "proceed anyway" option on net::err_cert_invalid in chrome on macos]: https://stackoverflow.com/questions/58802767/no-proceed-anyway-option-on-neterr-cert-invalid-in-chrome-on-macos#58957322

knowledge base/google search.md

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+# Google Search
+
+## TL;DR
+
+- find an **exact phrase** enclosing it in _quotation marks_ (`""`); it will give back only results that include those same words in that same order:
+
+  ```plaintext
+  mama "i just killed a man"
+  ```
+
+- **exclude a word** from a search preceding it with a _minus sign_ (`-`); it will filter out unwanted results:
+
+  ```plaintext
+  how to scrub -tips
+  ```
+
+- find results that **include all of the words in a phrase** using the _asterisk symbol_ (`*`); it will give back results that include a specific phrase but may also have other words:
+
+  ```plaintext
+  how to clean * from sheets
+  ```
+
+- get results **from a particular website only** using the `site:` operator:
+
+  ```plaintext
+  site:wikipedia.org obama
+  ```
+
+  use the operator alone to determine whether Google has indexed a website:
+
+  ```plaintext
+  site:heyitsa.me
+  ```
+
+## Further readings
+
+- [20 Googling Tricks 99% of People Don't Know About]
+
+[20 googling tricks 99% of people don't know about]: https://betterhumans.pub/20-googling-tricks-99-of-people-dont-know-about-465ba0477bec