Perhaps you should try some spelling variations:
"coder code using undersampling problems" » "coder code using undersampling problem" (Expand search), "coder code using sampling problems" (Expand search), "coder code and undersampling problems" (Expand search), "code code using undersampling problems" (Expand search), "modern code using undersampling problems" (Expand search), "color code using undersampling problems" (Expand search), "coder made using undersampling problems" (Expand search), "coder coding using undersampling 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder code using undersampling problems\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder code using undersampling problems ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder code using undersampling problems") OR ("api python python python programming"))*.