Perhaps you should try some spelling variations:
yang liang » wang liang, yan liang, yang yang
y.c poland » etc poland
wang yang » wang yan, wang liang, wang yanling
tuan hua » tan hua, tuan vu
yuan hui » yuan fei, jaan hui, yang hui
pei yang » wei yang, pei yun, yi yang
hui yang » hui ying, du yang, h yang
poland a » poland _

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yang) or (yang liang)) ((tuan hua) or (yuan hui)) ((pei yang) OR (hui yang)) y.c poland a ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yang) OR (yang liang)) ((tuan hua) OR (yuan hui)) ((pei yang) OR (hui yang)) y.c poland a ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yang) or (yang liang)) ((tuan hua) or (yuan hui)) ((pei yang) OR (hui yang)) y.c poland a ;*".