Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"khoa can duc snippets" » "khoa cam duc snippets", "khoa cap duc snippets", "khoi can duc snippets", "khoa van duc snippets", "khoa cao duc snippets", "khoa tran duc snippets", "khoa can 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: (((("khoa can 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: (((("khoa can duc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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