Perhaps you should try some spelling variations:
lean thinking » re thinking, new thinking
land thinking » brand thinking, can thinking, mind thinking
song skin » song shin, song jin, song min
yan qian » yan liang, jun qian, yan clan
bonn ein » bonn mein, bonn die, kann ein
wan yan » wang yan, nan yan, wai yan
qian yi » qian yan

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: wan yan qian yi ((land thinking) OR (lean thinking)) form ((bonn ein) OR (song skin)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yan qian yi ((land thinking) OR (lean thinking)) form ((bonn ein) or (song skin)) ;~".
• Adding a wildcard symbol may retrieve word variants: wan yan qian yi ((land thinking) OR (lean thinking)) form ((bonn ein) or (song skin)) ;*.