With most large pharma companies now using ATS (Applicant Tracking Systems), it means that when you apply for a job (either through pharmiweb or directly), your CV and application is quite likely to be checked by a computer for suitability.
It does this typically by looking at how many key words that are relevant to the job, are included in your CV. For example, if you're applying for a Clinical Data Manager job, and your CV doesn't include terms such as CRF (case Report Form) or other "buzz words" core to the role, you may not even get past the automated check, regardless of how good your experience or background is.
So one way of helping to get over this hurdle, is to ensure that your CV includes the keywords that have been used in the job description or the job advert. You can do this manually, but this can be time consuming doing it for multiple jobs.
The other option is to use a tool such as Jobscan, which allows you to cut and paste your CV and the Job description side-by-side, and then does clever comparisons and makes recommendations that will help your CV be a better match for that specific job.
Pharma job adverts often include many abbreviations, acronyms and buzz words - and it's hard to do these comparisons manually, so try optimising your CV with Jobscan, it might just get your your next interview!