The search results are incomplete. Solution: Go back to the Index Manager and ensure you added all relevant folders. Also, check that your index was rebuilt after the last document edit.
Without an index: You type a keyword, and Foxit scans the entire PDF document word-by-word. For a 500-page manual, this can take 10-15 seconds. index of foxit reader
When you think of an "index," you might picture the thick pages at the back of a textbook listing every major topic and the page numbers where they appear. In the digital world, especially within PDF documents, an index serves the same purpose—but with supercharged speed. The search results are incomplete