Perhaps you should try some spelling variations:
reformen und » formen und, reform und, normen und
der reformen » der reform
xiao yang » xiao zhang, xia fang, xiao yuan
yang yang » wang yan
wang yang » wang yan, wang liang, wang yanling
und adb » und ab, band adb, und adel
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 ((((xiao yang) OR (yang yang))) OR (wang yang)) der reformen und adb dong di ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((((xiao yang) or (yang yang))) or (wang yang)) der reformen und adb dong di ;*.