Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"cao tan duc snippets" » "cao tang duc snippets", "cao tai duc snippets", "cao van duc snippets", "cao tran duc snippets", "cao tan duoc snippets", "cao than duc snippets", "cao tan 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: (((("cao tan 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: (((("cao tan duc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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