Perhaps you should try some spelling variations:
things feng » things end, things found, things using
things feel » things fall, think feel, things seven
things deep » things devops, things seven
tree first » cree first, greek first, trade first
douglas b » douglas f, douglas w, douglas a
tan » than
hong » long
mainz » main

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: tan hong mainz tree first ((things feng) OR (((things feel) OR (things deep)))) douglas b ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tan hong mainz tree first ((things feng) or (((things feel) OR (things deep)))) douglas b ;~".
• Adding a wildcard symbol may retrieve word variants: tan hong mainz tree first ((things feng) or (((things feel) OR (things deep)))) douglas b ;*.