Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"son va ngan snippets" » "son van ngan snippets", "son vu ngan snippets", "son va ngay snippets", "song va ngan snippets", "son la ngan snippets", "lon va ngan snippets", "son va ngan 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 ("son va ngan snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("son va ngan snippets"))) OR ("locating bug code snippets")).
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