Mass move threads by keyword

[Divvy]

Hello friends,

Maybe someone can help me with a little thing.

I created a new forum to move all spam with "cash download links" to there.
I have about 100.000 topics to check and to move them.

So Im using the tool at admincp to move threads:
/admincp/thread.php?do=move

I select the destination forum, add the member username and choose the forum to search.
This is perfect to move all topics of a specific member to there, but I have a problem, besides the 100.000 topics that I need to check one by one, I have about 50.000 members to move, and one by one too...

So my idea to earn lots of time is, instead using the username field to move all topics, use something like the title field, but to search in the post, not only title.

For example, I want to add the keyword "depositfiles" and than, all the TOPICS with "depositfiles" keyword, will moved to the new forum that I want.

Do you understood the idea?
Is there any way to do this?

My idea is creating a new field in this tool, but I dont know how to do it.
Or else, and maybe a faster solution, making a modification in the "title" field to search in the post too.

Can someone help me, please?