Perhaps you should try some spelling variations:
"coder under variable models problem" » "coder under variables model problem" (Expand search), "coder and variable models problem" (Expand search), "coder under visible models problem" (Expand search), "coder under variable model problem" (Expand search), "coder under variable models problemas" (Expand search), "coder under variable modelo problema" (Expand search), "code under variable models problem" (Expand search), "cover under variable models problem" (Expand search), "clover under variable 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 under variable models problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder under variable models problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder under variable models problem") OR ("api python python python programming"))*.