Perhaps you should try some spelling variations:
lean thinking » re thinking, new thinking
thinking four » thinking form, thinking about, thinking aloud
wang liang » wang yang
yan liang » yang liang, you liang, yan wang
song skin » song shin, song jin, song min
kann ein » kann eine, kann die, kann man
li lean » ii lean, li lan, mit lean

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: wang ((yan liang) OR (wang liang)) li lean thinking four ((kann ein) OR (song skin)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan liang) OR (wang liang)) li lean thinking four ((kann ein) or (song skin)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yan liang) OR (wang liang)) li lean thinking four ((kann ein) or (song skin)) ;*.