Translation:The theory of evolution is very interesting.
As a native English speaker I would only say "the theory of...." evolution/relativity etc etc
I did not fully understand what you mean, but "The evolution theory" sounds perfectly fine to me.
I don't know, it's a grammatically sound construct, but that's just not how it's said in English. Scientific theories and laws are generally said as "the theory (or law[s]) of evolution/gravity/electromagnetism/thermodynamics/whatever". I'm sure there are exceptions, but in this case it would sound more normal to say "evolutionary theory", "gravitational theory", etc - add an adjectival suffix to use it that way.
Hmm, Google returns 177 thousand result for "The Evolution Theory". Less than your alternatives, but it's still used.
"The evolution theory is very interesting" was not accepted.
I have just reported it as well.