Perhaps you should try some spelling variations:
yang guang » yan guan, yang liang
yang yang » wang yang, wang yan
2 langere » b langere, 3.2 langere, 2 lander
hui yang » du yang, h yang, hui ping
hui ying » huei ying, hoi ying, hui ping
3 langer » 3 lange, 3 longer, b langere
tuan vu » thanh vu, tuan hua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang guang) or (yang yang)) tuan vu ((hui yang) OR (hui ying)) ((3 langer) or (2 langere)) do ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang guang) OR (yang yang)) tuan vu ((hui yang) OR (hui ying)) ((3 langer) OR (2 langere)) do ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang guang) or (yang yang)) tuan vu ((hui yang) OR (hui ying)) ((3 langer) or (2 langere)) do ;*".