Rearranging pages in Acrobat by specific keywords in the text

[pmmusiccenter]

Thanks in advance for help anyone can give. I'm trying to figure out how to rearrange pages by keywords already in the text. For example: We have a PDF with 100 invoices for band books and want to arrange them by instrument. Using the search function, I can find every place the word "Flute, or Trumpet" appears, but I'm hoping to find a way to search for "Flute" and then move those pages together to the top of the PDF. Repeating this for each instrumentation until all 100 pages are rearranged in the order we need.

The only way I know of to rearrange pages, is by selecting each thumbnail (either in the thumbnail preview bar at the side, or in the "organize pages" function) and manually moving them into place. A few searches I've done lead me to think I need to use some sort of Script? I'm still in the learning phase, and don't understand yet what that means. 

[Mubasher007]

Page sequence is also not changing according to the Keywords placed.

[Mubasher007]

The error is this that, sometimes it does not execute. If it does, the Keyword that was placed at last, those pages come at the first in the file.