Perhaps you should try some spelling variations:
thinking firm » thinking form, thinking from, thinking circa
yan liang » yang liang, wang liang, you liang
song skin » song shin, song jin, song min
kann ein » kann eine, kann die, kann man
wan yan » wang yan, nan yan, wai yan
li land » ii land, li lan, die land
i land » ii land, 1 land, 2 land

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