Perhaps you should try some spelling variations:
ruckgang des » ruckgang der
des realen » der realen
zwang und » zugang und
shang hai » shang kai, dang hai, chang ha
wang und » gang und, lang und, rang und
liang li » ling li, qiang li, liang wei
hong yu » wong yue

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang und) OR (zwang und)) ruckgang des realen liang li ((shang hai) or (hong yu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang und) OR (zwang und)) ruckgang des realen liang li ((shang hai) OR (hong yu)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang und) OR (zwang und)) ruckgang des realen liang li ((shang hai) or (hong yu)) ;".
• Adding a wildcard symbol may retrieve word variants: ((wang und) OR (zwang und)) ruckgang des realen liang li ((shang hai) or (hong yu)) ;*.