First, after opening the document with the fast PDF editor, directly use the shortcut key "Ctrl+F" to open the search settings window.

Enter the keywords you need to find in the "Search" input box; click "Character Format" on the right and the "Search Format" setting window will pop up. You can change the font, font size, filling, etc. according to your needs. Precise settings to locate searches.

Click on the blue font of "All pages of the current document" to modify the page range of the search. After setting the corresponding settings according to your needs, click "Confirm". (The default is to search all pages of the entire document)

In addition, you can also select "Whole Word Match"/"Case Sensitive"/"Use Wildcards" according to your needs for more precise search conditions, and you can check them at the same time. After setting up multiple items, click "enter" on the keyboard to start searching, or set "Find Next" or "Find All" on the right side of the window. The page will automatically jump and the searched keywords will be highlighted in black.