Welcome to the Community. I can see the importance of being able to search for your transactions using the search function in QuickBooks. Rest assured, I'll be happy to assist you so you can get back to doing what you enjoy the most.
Based on the details you've provided above, I suspect this may be a browser-related issue. In order to fix such issues, I recommend clearing cache and cookies on your browser. Clearing cache and cookies helps with fixing most browser issues. You can do this by following the steps in this article: Clear Cache and Cookies. If you're still having issues after verifying the info above, I recommend contacting our support team so they can take a closer look at the issue. You can contact our support team using the details below:
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Schedule a Callback or start a Chat: click (?)Help in the upper right > type and enter "Contact support" into the QB Assistant > click Contact Us > explain your situation > click Let's Talk > choose Get a callback or Start a Chat.