Perhaps you should try some spelling variations:
yang guang » yan guan, yang liang
yang yang » wang yang, wang yan
song ming » song bing, song min, gong min
li zhang » _ zhang
zhang li » zhang lei, zhang lin, zhang i
doing un » doing und, doing our, doing von
hua li » bohua li

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan ((yang guang) OR (yang yang)) hua li zhang li ((doing un) or (song ming)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan ((yang guang) OR (yang yang)) hua li zhang li ((doing un) OR (song ming)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan ((yang guang) OR (yang yang)) hua li zhang li ((doing un) or (song ming)) ;*".