Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"dua lan hung snippets" » "dua van hung snippets", "dua luan chung snippets", "dua lan phuong snippets", "dua lang hung snippets", "dua ban hung snippets", "duc lan hung snippets", "dua lan hung 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: (((("dua lan hung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dua lan hung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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