Umm..I don't know that exactly I think not makes sense. = Umm... I don't know exactly. I don't think it makes sense.
In detail, advertising that it's coming ridiculous result or expensive fee and so on. = 
For example, some advertisements promise unrealistic results or charge expensive fees, and so on.
As the world has advanced, a detailed search is essential before the fraud becomes more detailed. = As the world advances, doing detailed research is essential because fraud is becoming more sophisticated.