Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"dua van hung snippets" » "dua van dung snippets", "dua manh hung snippets", "dua van duong snippets", "duy van hung snippets", "dua vao hung snippets", "duc van hung snippets", "dua van hung 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: (((("dua van hung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dua van hung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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