Taxonomy search module

Hi
I'm going to use drupal as a documentation system. To achieve that I need search module. I read that taxonomy search module would be good for that. I want to ask more experienced with Drupal users if my use case gonna work with drupal.

So I will have three dictionaries:
- Categories ( assume reading files, writing files, modifiers )
- Version numbers ( 1.00, 1.01, 1.02 ... etc. )
- User groups ( developers, users, clients )

For example in my documentation system I have article on how to read file using my tool. And I intoduced this feature in version 1.00 of my tool. The receiver of this article is normal user. So I will tag this article with: reading files, v1.00, users. Then I will make modification to file reading mechanism and in version v1.10 I will release a update. So I will have to make update on the article and tag it with version v1.10.

Now assume I a user that is going to search for information how to read a file in my tool and I'm using version v1.05 of that tool.
So what i would do would be search using three terms: reading files, v1.05, users. What I'm expecting is article on reading files tagged with v1.00 because there was no change in reading files between v1.00 and v1.10
The question is how the taxonomy search module is dealing with numbers?

Second question I've got is I would like to use word LATEST to tag anything what is new. And when there will be something newer then anything what was labeled LATEST would change to a version number. So the word LATEST would be an alias for the highest version number. Is that possible ??