Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"von ngan duc snippets" » "toan ngan duc snippets", "vu ngan duc snippets", "von luan duc snippets", "von nganh duoc snippets", "von ngang duoc snippets", "von nganh suc snippets", "von ngan 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: (((("von ngan duc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
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