Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets", "data using java slippers"
"dung duc phan snippets" » "duong duc phan snippets", "dang duc phan snippets", "dung du phan snippets", "dung dung phan snippets", "dung duc thang snippets", "dung duc phung snippets", "dung duc phan 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: (((("data using java snippets") or ("dung duc phan snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("data using java snippets") OR ("dung duc phan snippets"))) OR ("locating bug code snippets")).
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