CLEAN : MH370 search zone to double if nothing found: officials

The video discusses the investigation branches and their similarity to ocean terrains. It highlights the commitment to a search operation, detailing the phases and areas covered. Australia and Malaysia are collaborating on the search costs. The latter part of the transcript contains unclear dialogue.

What is the second phase of the search operations referred to in the text?

Which two countries are mentioned as sharing the costs of the search?