Perhaps you should try some spelling variations:
"using java core snippets" » "using data core snippets"
"dung quy thu snippets" » "cung quy thu snippets", "dung qua thu snippets", "nhung quy thu snippets", "dung huy thu snippets", "dung duy thu snippets", "dung quy thi snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs 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 core snippets") or ("dung quy thu snippets"))) or ("locating bug code snippets"))~.
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