Job Search (Full Text Search) with Keywords Not working for External Candidates

Hello Experts,

We are facing one issue, after registering as a external candidate when that candidate is trying to search job using keywords(Full Text Search) no jobs are getting displayed. But we are able to search the job with Application via Reference Code.

We have the following configuration E-Rec(NW 7.0 E hp.2 ) and ECC 6.0 (E hp.6) & TREX also installed.

Please give your valuable input.

Best Regards,

Deepak