Perhaps you should try some spelling variations:
thinking firm » thinking form, thinking from, thinking circa
can thinking » lean thinking, case thinking, a thinking
yang liang » wang liang, yang yang, peng liang
yan liang » wang liang, you liang, yan wang
kann eine » kann ein, dann einen, kann die
song skin » song shin, song jin, song min

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

• Performing a fuzzy search may retrieve terms with similar spellings: wai ((yan liang) OR (yang liang)) li can thinking firm ((kann eine) or (song skin)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wai ((yan liang) OR (yang liang)) li can thinking firm ((kann eine) OR (song skin)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wai ((yan liang) OR (yang liang)) li can thinking firm ((kann eine) or (song skin)) ;*".