Perhaps you should try some spelling variations:
parker david » aaker david, tarr david, dyker david
yang juden » yang junsen, yang judy, yang jun
young cho » young choi, young hr
lang yao » yang yao, gang yao, wang yan
yao yang » yang yang
hong hai » shang hai, zhong tai, dang hai
juden c » juden _, juden im, juden um

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: lang yao yang juden c ((parker david) OR (hauner david)) ((hong hai) OR (young cho)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yao yang juden c ((parker david) OR (hauner david)) ((hong hai) or (young cho)) ;~".
• Adding a wildcard symbol may retrieve word variants: lang yao yang juden c ((parker david) OR (hauner david)) ((hong hai) or (young cho)) ;*.