Perhaps you should try some spelling variations:
knowing about » know about, knowing your
known about » know about
huang yang » huang ying, huang chang, yang yang
wang yang » wang yan, wang liang, wang yanling
fang wei » wang wei, zhang wei, liang wei
1 king » _ king
wei 1 » web 1, wei _

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) OR (huang yang)) fang wei 1 king john ((knowing about) OR (known about)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yang) or (huang yang)) fang wei 1 king john ((knowing about) OR (known about)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang yang) or (huang yang)) fang wei 1 king john ((knowing about) OR (known about)) ;*.