Perhaps you should try some spelling variations:
dong nan » dong yang, dong sin, dong cao
dong bin » dong sin, dann bin
test how » tested how, trust how, lost how
west how » lost how, bust how, cst how
sein das » sein des, sein de, sein du
das hari » das paris, das herz, das hirn
dong di » dong sin
et a » et al, et la, e a

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: ((dong nan) OR (((dong bin) OR (dong di)))) et a ((test how) OR (west how)) sein das hari ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong nan) or (((dong bin) or (dong di)))) et a ((test how) OR (west how)) sein das hari ;~".
• Adding a wildcard symbol may retrieve word variants: ((dong nan) or (((dong bin) or (dong di)))) et a ((test how) OR (west how)) sein das hari ;*.