Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"thu hanh tin snippets" » "thuc hanh tin snippets", "thu thanh tin snippets", "thuy hanh tin snippets", "thu hanh tinh snippets", "thu hanh trinh snippets", "thu nhanh tinh snippets", "thu hanh tin 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: (((("thu hanh tin snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu hanh tin snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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