To search the full text of my public writings, visit the public repository and use the search bar at the top of the screen. Many posts have tags related to their subject matter, so for example you can try searching for "technology" or "religion" to see all posts that mention this subject.
On mobile, you may need to select the ellipsis (...) to see the search icon.
The same technique will work to search my private updates, if you have requested access to that private repository. To learn more about requesting access, please click here.