Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
yang wang » yang yang, yan wang, yang liang
yuan huo » yuan hui, tuan hua
hui ying » huei ying, hoi ying, hui ping
huo hui » chun hui, kuo huei
i2 long » 12 long, 3.2 long, 6.2 long
2 long » a long, 3 long, 3.2 long

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang wang) or (yang guang)) yuan huo hui ying ((((i2 long) or (2 long))) or (die losung)) du ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang wang) OR (yang guang)) yuan huo hui ying ((((i2 long) OR (2 long))) OR (die losung)) du ;.
• Adding a wildcard symbol may retrieve word variants: ((yang wang) or (yang guang)) yuan huo hui ying ((((i2 long) or (2 long))) or (die losung)) du ;*.