Perhaps you should try some spelling variations:
wang dan » wang yan, wang ban, wang yidan
yang jui » yang judy, yang di, yang xi
irene um » irene m, ironie um, sirene im
die wang » die wahl, die wage, die ware
die wand » die wende, die wahl
dn data » dan data, n data, own data
yang yi » yang di, yang xi

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: ((dn data) OR (wang dan)) ((yang yi) OR (yang jui)) irene um ((die wang) OR (die wand)) yue ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dn data) or (wang dan)) ((yang yi) or (yang jui)) irene um ((die wang) OR (die wand)) yue ;~".
• Adding a wildcard symbol may retrieve word variants: ((dn data) or (wang dan)) ((yang yi) or (yang jui)) irene um ((die wang) OR (die wand)) yue ;*.