Sentence examples for this is no from inspiring English sources

"this is no" is not a complete sentence and is not usable in written English.
In much the same way "this isn't" is not a complete sentence, "this is no" is not a complete sentence. For example, you could not use "this is no" in the sentence "This is no way to behave." Here, the sentence is incomplete without the verb "is" and the adverb "way". The correct sentence would be "This is not a way to behave."