Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"phan he trong slippers" » "phan he thong slippers", "phan he trung slippers", "phan le trong slippers", "phan che trong slippers", "phan h trong slippers", "phan ha trong slippers", "phan he trong slippery", "phan he trong 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 java java snippets") or ("phan he trong slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("phan he trong slippers"))) OR ("locating bug code snippets")).
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