Perhaps you should try some spelling variations:
"coder code and undersampling problems" » "coder code and undersampling problem" (Expand search), "coder code and sampling problems" (Expand search), "coder code of undersampling problems" (Expand search), "coder code _ undersampling problems" (Expand search), "coder code and oversampling problems" (Expand search), "code code and undersampling problems" (Expand search), "modern code and undersampling problems" (Expand search), "color code and 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 and undersampling problems\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder code and undersampling problems ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder code and undersampling problems") OR ("api python python python programming"))*.