Perhaps you should try some spelling variations:
yang guang » yan guan, yang liang
yang yang » wang yang, wang yan
yuan hui » yuan fei, jaan hui, tuan hua
hui ying » huei ying, hoi ying, hui ping
3.2 long » 3.2 land
yi gang » ii gang, i gang, li gang
long du » long d, long do, long run

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yang) or (yang guang)) ((wang hua) or (yuan hui)) ((yi gang) or (hui ying)) 3.2 long du ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (yang guang)) ((wang hua) OR (yuan hui)) ((yi gang) OR (hui ying)) 3.2 long du ;.
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (yang guang)) ((wang hua) or (yuan hui)) ((yi gang) or (hui ying)) 3.2 long du ;*.