Perhaps you should try some spelling variations:
lean thinking » re thinking, new thinking
thinking four » thinking form, thinking about, thinking aloud
wang yang » wang yan, wang liang, wang yanling
yang lin » yang jin, wang lin, yang liang
bonn ein » bonn mein, bonn die, kann ein
yang li » yang di, yang xi, yang yi
shin » skin, sein, thin

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