Perhaps you should try some spelling variations:
"coder using mixed regression coding" » "coder using mixed regression modeling" (Expand search), "coder using mixed regression using" (Expand search), "coder using mixed regression during" (Expand search), "coder using and regression coding" (Expand search), "coders using mixed regression coding" (Expand search), "cover using mixed regression coding" (Expand search), "code using mixed regression coding" (Expand search)
"api python system python programming" » "api action system python programming" (Expand search), "api python systems python programming" (Expand search), "api python sistemas python programming" (Expand search), "api python pytm python programming" (Expand search), "rpa python system python programming" (Expand search), "manim python system 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 using mixed regression coding\") OR (\"api python system python programming\"))~".
• Removing quotes may allow a broader search: (( coder using mixed regression coding ) OR ( api python system python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder using mixed regression coding") OR ("api python system python programming"))*.