Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"ban ham nen snippets" » "ba ham nen snippets", "ban hang nen snippets", "ban hanh nen snippets", "ban cham nen snippets", "ban lam nen snippets", "ban ham yen snippets", "ban ham nen 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: (((("ban ham nen snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban ham nen snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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