If you are looking for information about someone online then you will find it important to have access to social media platforms such as Facebook for the same. If you do not make use of social media platforms and you just type someone's name on Google then your chances of finding someone or the exact same person that you may be after may not be very good given that the names that people use are not always unique to them.
However, if you google someone then your chances of finding them can be improved given that Google would also provide you with links to social profiles belonging to people that share the same name which you can then carry out further research about. However, in order to improve your chances of finding the person or the exact same person that you might be looking for, it would be a good idea to put more information about them. Instead of just using their full names, you may also want to put their location information such as Nicholas Trudeau St. Augustine to see if this brings up the results that are relevant to what you might be after.
For example, if you're looking for Nicholas Trudeau then all you have to do is enter the full name together with their location information so that you only get results of all Nicholas Trudeau who may be from a particular location such as Florida for example.