Perhaps you should try some spelling variations:
knowing about » known about, know about, knowing your
john knowing » how knowing, john bowring, john king
huang ying » huang jing, huang ting, huang yang
wang yang » wang liang, wang yanling
zhang web » zhang wei, zhang lei, zhan wei
1 king » _ king
web 1 » web _

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