PDF Documents are searchable but how can I get the PDF to open on the correct page with respect to the keyword searched on

I have hosted a collection of PDF within a shared document archive. These are searchable, but how can you command the PDF to open on the page respective to the keyword searched on.

For example PDF1 has an article on Page 5 about Fish. If I search the document archive for 'Fish', PDF1 is returned in the list of results as expected. But when you click the document result link it loads the PDF onto the first page of the document, not page 5 as hoped for.

How can I correct this? Is this a flaw with storing PDF files? Would this work if I stored the original DOC or PPT?

Thanks in advance for any efforts to repsond

Graham