Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hoc chat vo snippets" » "hoc chat code snippets", "hoc phat vo snippets", "hoc cao vo snippets", "hoc phan vo snippets", "hoc chat va snippets", "hoc chat co snippets", "hoc chat bo 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: (((("hoc chat vo snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc chat vo snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hoc chat vo snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc chat vo snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.