Perhaps you should try some spelling variations:
"surface functionals in computer program" » "surface functional in computer program" (Expand search), "surface functionalised in computer program" (Expand search), "surface functionality in computer program" (Expand search), "surface functions in computer program" (Expand search), "surface functional index computer program" (Expand search), "surface functionals _ computer program" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking 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: (("surface functionals in computer program") OR ("using coding python python programming"))~.
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• Removing quotes may allow a broader search: (( surface functionals in computer program ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("surface functionals in computer program") OR ("using coding python python programming"))*.