Perhaps you should try some spelling variations:
"coder computational and testing problem" » "code computational and testing problem" (Expand search), "poder computacional and testing problem" (Expand search), "model computational and testing problem" (Expand search), "coder computational fluid testing problem" (Expand search), "coder computational and nesting problem" (Expand search), "coder computational and nesting problems" (Expand search), "coder computational and teaching 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)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder computational and testing problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder computational and testing problem ) OR ( api python python python programming ))~.
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