Perhaps you should try some spelling variations:
yang liang » wang liang, yan liang, yang yang
yang guang » yang yang, yan guan
de longue » der longue, de langue, de langues
yuan hui » yuan fei, jaan hui, tuan hua
pei yang » wei yang, pei yun, yi yang
hui yang » hui ying, du yang, h yang
de long » le long

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: ((yang liang) OR (yang guang)) yuan hui ((pei yang) OR (hui yang)) ((de long) OR (de longue)) do ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang liang) or (yang guang)) yuan hui ((pei yang) or (hui yang)) ((de long) OR (de longue)) do ;~".
• Adding a wildcard symbol may retrieve word variants: ((yang liang) or (yang guang)) yuan hui ((pei yang) or (hui yang)) ((de long) OR (de longue)) do ;*.