Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"han tap luon snippets" » "han tap lon snippets", "han tay luon snippets", "han tap luyen snippets", "han tai luon snippets", "toan tap luon snippets", "nhan tai luon snippets", "han tap luon slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("han tap luon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han tap luon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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