Perhaps you should try some spelling variations:
yang guang » yan guan, yang liang
yang yang » wang yang, wang yan
tuan hua » tan hua, tuan vu, yuan hui
yang hui » yang jui, wang hui, yang muxi
yin yang » ying yang, yi yang, yin fang
3.2 long » 3.2 land
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)) ((tuan hua) or (yang hui)) ((yin yang) or (du yang)) 3.2 long du ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (yang guang)) ((tuan hua) OR (yang hui)) ((yin yang) OR (du yang)) 3.2 long du ;.
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (yang guang)) ((tuan hua) or (yang hui)) ((yin yang) or (du yang)) 3.2 long du ;*.