Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"pha van kinh snippets" » "pha va kinh snippets", "pha van minh snippets", "pha van dinh snippets", "pham van kinh snippets", "phan van kinh snippets", "phap van kinh snippets", "pha van kinh 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 kinh 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 kinh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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