Perhaps you should try some spelling variations:
thinking four » thinking form, thinking about, thinking aloud
a thinking » 1 thinking, 3 thinking, re thinking
yan zhang » yuan chang, bin zhang, han chang
zhang wei » zhen wei
song sein » song shin, song jin, song min
kann ein » kann eine, kann die, kann man
wan yan » wang yan, nan yan, wai yan
wei a » wei ta, wei ya, bei a

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 zhang wei a thinking four ((kann ein) OR (song sein)) ;~.
• Adding a wildcard symbol may retrieve word variants: wan yan zhang wei a thinking four ((kann ein) or (song sein)) ;*.