Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"pham soc duc snippets" » "cham soc duc snippets", "pham ngoc duc snippets", "pham sach duc snippets", "pham soc duoc snippets", "pham soc suc snippets", "pham hoc duc snippets", "pham soc 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: (((("pham soc 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: (((("pham soc duc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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