Searches of specific areas of land identified during the investigation were completed last Friday.

BBC: Missing April Jones search ends, almost 7 months on

On the other hand, someone who searches for a specific job on a search engine or decides to look at a certain company's website probably has more relevant experience, he said.

WSJ: For Job Seekers, Company Sites Beat Job Boards

At the least, searches that are mediated by regulated medical companies, and tie disease keywords to specific, regulated medical products.

FORBES: FDA Regulates Internet Search

The police have extended their searches, pumped water from boggy ground, brought in special equipment and asked for more specific information.

ECONOMIST: Northern Ireland