Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"thu thuy len snippets" » "thi thuy len snippets", "thuc thuc len snippets", "thu thuat len snippets", "thu thuy lien snippets", "thu thuy den snippets", "thu thuy linh snippets", "thu thuy len 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: (((("python using java snippets") or ("thu thuy len snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("thu thuy len snippets"))) OR ("locating bug code snippets")).
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