And a report about him spread through all the surrounding country Luke 4 v13 then why none where written about it outside the Bible?

To answer you question, you will have to look into the origins of The Bible and who authored each book.

When you do that accounts for what you are asking. Jesus has been mentioned by many cultures and many nations, and the authors though few in number, came from a wide range of countries and ethnic backgrounds.

Also a report, could be referring to the bible and spreading through many nations, look at Christianity as a whole today, the religion is world wide now, not just a mediterranean myth.