Perhaps you should try some spelling variations:
david young » david loundy
die normen » die formel, i normen, die reformen
die formen » die folgen
nach david » saah david, macher david
you liang » you xian, you liangzhi
ii normen » i normen, ii formen, iii formen
young let » young get, young men, young er
wan you » want you, warn you, can you

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan you liang ((((ii normen) OR (die normen))) or (die formen)) nach david young let ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan you liang ((((ii normen) OR (die normen))) OR (die formen)) nach david young let ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan you liang ((((ii normen) OR (die normen))) or (die formen)) nach david young let ;*".