Perhaps you should try some spelling variations:
"programming language classical methods." » "programming languages classical methods.", "program language classical methods.", "programming language classical period.", "programming language classical myth."
"programming algae classification methods." » "programming algas clasificacion methods.", "programming guinea classification methods.", "programming la clasificacion methods.", "programming languages classification methods."

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• Performing a fuzzy search may retrieve terms with similar spellings: (("programming language classical methods.") or ("programming algae classification methods."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("programming language classical methods.") OR ("programming algae classification methods.")).
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