Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
china wang » china yang, china chang, china zhang
yan liang » yang liang, wang liang, you liang
wang yang » wang yan, wang liang, wang yanling
langer a » lander a, langer _, langer als
longer a » longer _
yang 3 » yang _, yang 8, gang 3

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((yan liang) OR (yang guang)) can china wang yang 3 ((langer a) OR (longer a)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yan liang) or (yang guang)) can china wang yang 3 ((langer a) OR (longer a)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((yan liang) or (yang guang)) can china wang yang 3 ((langer a) OR (longer a)) ;*.