Perhaps you should try some spelling variations:
"coder coatings based functional model" » "coder coatings and functional model" (Expand search), "coder coatings based functional mri" (Expand search), "copper coatings based functional model" (Expand search), "powder coatings based functional model" (Expand search), "cocr coatings based functional model" (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), "manim python python python programming" (Expand search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coatings based functional model") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coatings based functional model\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coatings based functional model ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coatings based functional model") OR ("api python python python programming"))*.