Perhaps you should try some spelling variations:
thinking four » thinking form, thinking about, thinking aloud
lan thinking » lean thinking, can thinking, a thinking
liang wei » zhang wei, wang wei, fang wei
xiang wei » zhang wei, wang wei, fang 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

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