The four words that give hope to Sam Murphy's family that cops believe missing ... trends now

Four simple words in a new police statement provide a sliver of hope that missing Victorian mother Samantha Murphy could still be alive. 

Ms Murphy left her home at Eureka Street in Ballarat East on February 4 to go jogging in the Woowookarung Regional Park and has not been seen since. 

The statement on Tuesday morning said that 'anyone who sights Samantha' is asked to call police on triple zero immediately.