Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dung van cuong snippets" » "dung van chuong snippets", "dung van duong snippets", "dung van cong snippets", "duong van cuong snippets", "dung va cuong snippets", "dang van cuong 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 ("dung van cuong snippets"))) or ("locating bug core snippets"))~.
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