Perhaps you should try some spelling variations:
"coder estimation from type problems" » "model estimation from type problems" (Expand search), "power estimation from type problems" (Expand search), "color estimation from type problems" (Expand search), "coder estimation of type problems" (Expand search), "coder estimation from the problems" (Expand search), "coder estimation from some problems" (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.

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