Perhaps you should try some spelling variations:
"coder arduino sampling algorithm optimization" » "coder arduino mapping algorithm optimization" (Expand search), "coder arduino matching algorithm optimization" (Expand search), "coder arduino mapping algorithms optimization" (Expand search), "con arduino sampling algorithm optimization" (Expand search), "ide arduino sampling algorithm optimization" (Expand search), "solar arduino sampling algorithm optimization" (Expand search)
"on python python python programming" » "on pythons python python programming" (Expand search), "on piton python python programming" (Expand search), "on pitons python python programming" (Expand search), "in python pythin python programming" (Expand search), "of python pythof python programming" (Expand search), "_ python pyth_ 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 arduino sampling algorithm optimization") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder arduino sampling algorithm optimization\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder arduino sampling algorithm optimization ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder arduino sampling algorithm optimization") OR ("on python python python programming"))*.