Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"tran hoang tan snippets" » "quan hoang tan snippets", "tran quang tan snippets", "tranh hang tan snippets", "tran hoang tran snippets", "tran hoang tuan snippets", "tran hoang van 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 ("tran hoang tan snippets"))) or ("locating bug core snippets"))~.
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