Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dan toan tieng snippets" » "dan toan tien snippets", "dan thoai tieng snippets", "dan toan thong snippets", "van toan tieng snippets", "dan than tieng snippets", "manh toan tieng 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 ("dan toan tieng snippets"))) or ("locating bug core snippets"))~.
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