Notepad++ Filter by Content

Question

I have several text files with different titles and I need:

1 - filter only files whose content contains "https://www.youtube.com/watch?v=g-9xjaJAaks";

2 - in the filtered files replace all occurrences of "2001" for "2000"

obs.: all files are .doc type and both 2001 and 2000 occur in the content of all files.

Thanks in advance