Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung cu thu slippers" » "dung cua thu slippers", "dung co thu slippers", "dung cho thu slippers", "dung cuu thu slippers", "dung cau thu slippers", "dung tu thu slippers", "dung cu thu slippery", "dung cu thu grippers"
"locating bug code snippets" » "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: (((("dung cu thu slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cu thu slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cu thu slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cu thu slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.