Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dang thuc lieu snippets" » "dang thuoc lieu snippets", "dan thuc lieu snippets", "nang thuc lieu snippets", "dang thuc hieu snippets", "dang thuc dieu snippets", "dang thuoc dieu snippets"
"locating bug core snippets" » "locating bug code snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java code snippets") or ("dang thuc lieu snippets"))) or ("locating bug core snippets"))~.
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