Perhaps you should try some spelling variations:
reusing human » using human, causing human, being human
facing human » causing human, healing human, leading human
income scale » income share, income shares
scale case » scalar case
case young » east young, jae young, wage young
young get » young let, young ages, young men

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 OR lang) yan ((facing human) OR (reusing human)) income scale case young get ;~.
• Adding a wildcard symbol may retrieve word variants: (wan or lang) yan ((facing human) or (reusing human)) income scale case young get ;*.