Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"nham hat va snippets" » "nham phat va snippets", "nham mat va snippets", "pham nhat va snippets", "nham chat va snippets", "nham hat van snippets", "nham dat va snippets", "nham hat va 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: (((("nham hat va snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nham hat va snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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