Hi, One of my website is India Academic doing well since last 6 months in google search. But from yesterday its not coming in google in any keyword. How its possible before yesterday it comes in google atleat 100 keywords and now hide in every keyword. What is the problem?
If it's a relatively new site, you might find that it's been penalized by Google for doing too well too early. You'll probably find that it will come back in a month's time and become more consistent with its positioning.
Don't worry too much and wait a few days. My marketing blog was until yesterday well doing (2nd page for blog marketing 138.000.000 competition) and is only found for the domain name actually. That's Google when they apply changes. It will come back if you haven't done anything against the rules.