Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
hong hong » hong kong, hong jong, hong ng
our brain » your brain, our brains, our main
yang john » young john, king john, yang jin
john wong » john song, john bonn
wong shiu » wong siu, cong shu, song shin
a brain » _ brain

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yang yang) OR (hong hong)) ((our brain) OR (a brain)) yang john wong shiu ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((yang yang) or (hong hong)) ((our brain) or (a brain)) yang john wong shiu ;*.