What i can't find on information published on the Internet?

Roughly speaking, on the internet you can find anything that somebody is willing and able to publish there. You may not be able to find certain types of information for free if somebody wants you to pay for it - i.e., requires some sort of subscription. But quite often, you can find an acceptable alternative for free. Certain details can't be found because so far, nobody took the time to publish the information - for example, information about some obscure village, where not many people use the Internet, or are not familiar enough with methods to publish information on the Internet.