Perhaps you should try some spelling variations:
yang guang » yan guan, yang liang
yang yang » wang yang, wang yan
yang john » young john, king john, yang jin
qian yan » qian jun, qian yi
tuan hua » tan hua, tuan vu, yuan hui
pei yang » wei yang, hui yang, pei yun
bonn hui » bonn zur, bonn zum, tong hui

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((qian yan) OR (yang yang))) OR (yang guang)) ((ya hua) OR (tuan hua)) pei yang john bonn hui ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((qian yan) OR (yang yang))) OR (yang guang)) ((ya hua) OR (tuan hua)) pei yang john bonn hui ;*".