Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"dam tim manh snippets" » "dam tim mach snippets", "dam tim hanh snippets", "dam tim man snippets", "dai tim manh snippets", "dau tim manh snippets", "dam tien manh snippets", "dam tim manh 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: (((("dam tim manh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dam tim manh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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