Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"vit tinh duc snippets" » "vi tinh duc snippets", "viec tinh duc snippets", "va tinh duc snippets", "vit minh duc snippets", "vit dinh duc snippets", "vit ninh duc snippets", "vit tinh duc 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: (((("vit tinh duc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vit tinh duc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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