Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"pha van xuat snippets" » "pha san xuat snippets", "pha va xuat snippets", "pha phan xuat snippets", "pham van xuat snippets", "phan van xuat snippets", "phap van xuat snippets", "pha van xuat 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: (((("pha van xuat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pha van xuat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("pha van xuat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.