Perhaps you should try some spelling variations:
"coder precoder and subgroup problem" » "coder precoder and subgraph problem" (Expand search), "coder precoder and group problem" (Expand search), "coder decoder and subgroup problem" (Expand search), "coder recover and subgroup problem" (Expand search), "coder recorder and subgroup problem" (Expand search), "coder precoce and subgroup problem" (Expand search), "coder precoder and subgroups problem" (Expand search), "coder precoder aab subgroup problem" (Expand search), "coder precoder in subgroup problem" (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 precoder and subgroup problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder and subgroup problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder and subgroup problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder and subgroup problem") OR ("api python python python programming"))*.