-landlard, MsWok...幫我看看，how I can get the detail information abo

V-landlard, MsWok...幫我看看，
有一房客想租房，他的工資蠻高的($15W)， 但他給我的credit report shows his
credit score has been decreased from 703 to 600. I checked his credit report,
but can not tell what is the exact reason for this credit score decreasing.
The credit score tells me that he has some delinquencies but not detail
information. Now my question is how I can get the detail information about
his payment delinquencies (is for house or for credit card or for something
else)?
Thank you very much!