To find the text that matches the whole cell (not part of the content in the cell) with case sensitive, please follow the steps below for details:
Step 1: Click anywhere in the worksheet;
Step 2: Click the "Home" tab from the ribbon;
Step 3: Click "Find & Select", and select "Find" from the drop-down list;
Alternatively, please use shortcut "Ctrl+F" to bring up "Find and Replace" window.
Step 4: In the "Find and Replace" window, type the text string (or any letters or numbers) you want to find in the worksheet;
Step 5: Click "Options" in the "Find and Replace" window, then check "Match case" and "Match entire cell contents";
Step 6: Click "Find Next" at the bottom to find the first record; or click "Find All" to find all the cells contain the text string (or numbers).