This is a small website so the number of hits you can expect will be small. If you are looking for Bob Jones who sailed on the Assiniboine in 1975, just search for Jones.
The more words you put in the search field the less chance you have of getting a hit. A search for Bob Jones HMCS Assiniboine 1975 will fail unless all of those words are in the photo description. If he's identified as "B. Jones" or "Robert Jones", or if "HMCS" is not used in the description, the search will fail.