Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"thu ngan xu snippets" » "tu ngan xu snippets", "tai ngan xu snippets", "vu ngan xu snippets", "thu ngan xua snippets", "thu nhan xu snippets", "thu ngon xu snippets", "thu ngan xu 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 ngan xu 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 ngan xu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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