Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"day phan duc snippets" » "dam phan duc snippets", "duy phan duc snippets", "dan phan duc snippets", "day pham duc snippets", "day phan tu snippets", "day phan dau snippets", "day phan duc 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: (((("day phan duc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("day phan duc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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