Speaking from a global perspective: every nation has its own way of writing and linking their laws. Although civil law countries, and case law countries respectively, have a lot of similarities (historically induced), they are still unique.

That is not the case when it comes to searching the world wide web. Here, by design, everything is linked and national borders are mostly irrelevant. So if you want to implement a Google of law, you have to do it locally. The only exception would be international law, which itself can be seen as local.