Applied around 8 Credit Card - But only 2 Hard Credit Inquiries -- How this is possible?

As others have said, you don't have one credit report, you have 3.

Equifax, Experian, and Transunion. A credit card will typically only check one of the 3 reports, so inquries can be spread among multiple reports.

The best source to view your credit report is AnnualCreditreport.com
That is a site maintained by the 3 credit bureaus, and they are required by law to give you your credit report once a year (from each of your reports). They won't give you your credit score, only your report. You should check all 3 every year, and keep track of it. That way if you have something negative, you will know about it, and you won't find out about it at a horrible time (like when applying for an auto loan or mortgage.)

Also, inquiries only affect your score for 1 year. They remain on your report for 2 years. Perhaps CreditKarma is only counting inquries 1 year old, I really don't know (and I'm sure some are on your other reports as well)