1377× search engine refers to a search engine with the name "1377×". However, as of my knowledge cutoff in September 2021, I am not aware of any popular or widely recognized search engine by that name. It's possible that it is a new search engine that has emerged since then, or it may be a less-known or specialized search engine that caters to a specific niche or region. Without further information, it's difficult for me to provide specific details about the 1377× search engine.