Perhaps you should try some spelling variations:
how slower » low lower
yan zhang » yuan chang, bin zhang, han chang
zhang der » zwang der, anhang der, zugang der
der rent » der re, der rede
song min » song ming, gong min, jong min
how slow » how low, grow slow, too slow
wang » wing, wan, lang

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan zhang der rent song min ((how slow) OR (((how slower) OR (has slower)))) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan zhang der rent song min ((how slow) OR (((how slower) OR (has slower)))) ;*.