Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"phi doi minh snippets" » "phi do minh snippets", "phi doi dinh snippets", "phi doi kinh snippets", "phi loi minh snippets", "phu doi minh snippets", "khi doi minh snippets", "phi doi minh 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: (((("phi doi minh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi doi minh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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