Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"con doi de snippets" » "con doi code snippets", "co doi de snippets", "con coi de snippets", "uon doi de snippets", "con doi deu snippets", "con dai de snippets", "con moi de snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("con doi de snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("con doi de snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( con doi de snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con doi de snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.