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 doi gian snippets" » "huong doi gian snippets", "dung tai gian snippets", "dung co gian snippets", "dung don gian snippets", "dung doi giam snippets", "dung toi gian snippets", "dung doi gian 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 doi gian 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 doi gian snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("dung ung java snippets") or ("dung doi gian snippets"))) or ("locating bug code snippets"))*.