Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets", "data using java slippers"
"dung toi thuc snippets" » "dung thoi thuc snippets", "dung tai thuc snippets", "dung doi thuc snippets", "dung tri thuc snippets", "dung noi thuc snippets", "dung thi thuc snippets", "dung toi thuc 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 toi thuc snippets") or ("data using java snippets"))) or ("locating bug code snippets"))~.
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