http://edition.cnn.com/2016/07/22/asia/mh370-search-suspended/index.html
It's strange that we can not have a clue to find the plane even in the era of high technology. Pictures from satellites didn't give us information about the plane, despite the fact that more than 3000 satellites go around the earth.
To find the plane, evolution of technology or accidental finding of the debris will be necessary.