Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"duy phan duc snippets" » "duc phan duc snippets", "dung phan duc snippets", "duy khanh duc snippets", "duy pham duc snippets", "duy phan tu snippets", "duy phan dau snippets", "duy phan duc slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("duy 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: (((("duy phan duc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("duy phan duc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.