I'd love Google to separate "fresh" and "old" into two different search engines. When using a new framework or a version of a language or when searching for new

I'd love Google to separate "fresh" and "old" into two different search engines. When using a new framework or a version of a language or when searching for news I don't want old results. However, when searching for a part number, old documentation, information about a person I do want old information. Right now it just seems google purges the old instead of building two indexes.