Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"cac hoi tiep snippets" » "cac hoa tiep snippets", "cac noi tiep snippets", "cac hoi tieu snippets", "cac thoi tiep snippets", "cac khoi tiep snippets", "cau hoi tiep snippets", "cac hoi tiep 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: (((("cac hoi tiep snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac hoi tiep snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac hoi tiep snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac hoi tiep snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.