Perhaps you should try some spelling variations:
"dung ung java snippets" » "dung trung java snippets", "dung quang java snippets", "dung chung java snippets", "dung using java snippets", "dung ngu java snippets", "dung ung va snippets", "dung ung java slippers"
"dung vi zheng snippets" » "dung li zheng snippets", "dung lei zheng snippets", "dung vi hong snippets", "dung va zheng snippets", "dung viet zheng snippets", "dung tai zheng snippets", "dung vi zheng 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: (((("dung ung java snippets") or ("dung vi zheng snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung ung java snippets") OR ("dung vi zheng snippets"))) OR ("locating bug code snippets")).
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