Perhaps you should try some spelling variations:
yang liang » wang liang, yan liang, yang yang
de longue » der longue, de langues, a longue
de langue » la langue, en langue
yan guan » gan guan, yan yuan, yang guang
pei yang » wei yang, hui yang, yi yang
tan hua » tuan hua, wang hua, tan chia
pei yun » lei kyun, mei yung, wei yuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang liang) or (yan guan)) tan hua ((pei yang) or (pei yun)) ((de longue) OR (de langue)) du ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang liang) OR (yan guan)) tan hua ((pei yang) OR (pei yun)) ((de longue) OR (de langue)) du ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang liang) or (yan guan)) tan hua ((pei yang) or (pei yun)) ((de longue) OR (de langue)) du ;".
• Adding a wildcard symbol may retrieve word variants: ((yang liang) or (yan guan)) tan hua ((pei yang) or (pei yun)) ((de longue) OR (de langue)) du ;*.