Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"khan cua duc snippets" » "nhan cua duc snippets", "than cua duc snippets", "han cua duc snippets", "khan cua tuc snippets", "khan cua nuoc snippets", "khan cua quoc snippets", "khan cua 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: (((("khan cua 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: (((("khan cua duc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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