Perhaps you should try some spelling variations:
"coder coding probit models problem" » "coder coding probit model problem" (Expand search), "coder coding probit models problemas" (Expand search), "coder coding probit modelo problema" (Expand search), "coder coding logit models problem" (Expand search), "coder coding tobit model problem" (Expand search), "modern coding probit models problem" (Expand search), "color coding probit models problem" (Expand search), "odor coding probit models 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: "((\"coder coding probit models problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coding probit models problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coding probit models problem") OR ("api python python python programming"))*.