Perhaps you should try some spelling variations:
"code coder code poisson problem" » "code coder code poisson problems" (Expand search), "code coder modelo poisson problem" (Expand search), "code coder models poisson problem" (Expand search), "code coder code position problem" (Expand search), "code code code poisson problem" (Expand search), "code under code poisson problem" (Expand search), "gcode code code poisson problem" (Expand search), "code modern code poisson problem" (Expand search), "code color code poisson problem" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search), "rpa python python python programming" (Expand search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"code coder code poisson problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( code coder code poisson problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("code coder code poisson problem") OR ("api python python python programming"))*.