Perhaps you should try some spelling variations:
wang liang » wang yang
und jochen » und knochen, und loschen, und john
main jeong » min jeong
und chen » und kuchen, und china
wei main » i main, wei aun, en main
jeong su » jeong _, jeong mi, jeong 情
dong di » dong sin

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: ((wang liang) OR (dong di)) y ((und chen) OR (und jochen)) wei main jeong su ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang liang) or (dong di)) y ((und chen) OR (und jochen)) wei main jeong su ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang liang) or (dong di)) y ((und chen) OR (und jochen)) wei main jeong su ;*.