Perhaps you should try some spelling variations:
sheng chen » chang chen
chen young » chen yong, chen yang, chen chung
young john » kong john, wong john, young jean
tang fang » zhang fang, yang fan, jing fang
tang tang » taizong tang
bonn shin » song shin, bonn ein
bonn mein » bonn ein

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

• Performing a fuzzy search may retrieve terms with similar spellings: long ((tang fang) OR (tang tang)) sheng chen young john ((bonn shin) or (bonn mein)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: long ((tang fang) OR (tang tang)) sheng chen young john ((bonn shin) OR (bonn mein)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "long ((tang fang) OR (tang tang)) sheng chen young john ((bonn shin) or (bonn mein)) ;".
• Adding a wildcard symbol may retrieve word variants: long ((tang fang) OR (tang tang)) sheng chen young john ((bonn shin) or (bonn mein)) ;*.