HI, Give me a suggestion Creating many ad groups in a Campaign will perform good or creating separate campaign for different theme will work, why?
Given your recent posts, I think you need to sit down and learn about PPC. Plenty of resources to get started. In Adwords, you are allowed a maximum of 25 campaigns. Think of a campaign as a category, a theme. The groups (up to 2000 per campaign) are your products. You could have more than one group for the same product. You'll set up your account differently depending on what you sell but that's the general idea.