Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets", "data using java slippers"
"dung toan tran snippets" » "dung doanh tran snippets", "dung thang tran snippets", "dung thanh tran snippets", "dung thoan tran snippets", "dung tan tran snippets", "dung hoan tran snippets", "dung toan tran 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 toan tran snippets") or ("data using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung toan tran snippets") OR ("data using java snippets"))) OR ("locating bug code snippets")).
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