Perhaps you should try some spelling variations:
wang yidan » wang yan
sirene im » irene m, sinne im, sirene _
dan data » can data, dan dana, dn data
yang jui » yang judy, yang di, yang xi
die wong » kie wong, die wand
yang yi » yang di, yang xi
dr wong » dr ong, dr congo, dr kongo

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