Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung hoc tre snippets" » "dung hoc code snippets", "dong hoc tre snippets", "dung thuoc tre snippets", "trung hoc tre snippets", "dung hoc tren snippets", "dung hoc te snippets", "dung soc tre snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using java snippets") or ("dung hoc tre snippets"))) or ("locating bug core snippets"))~.
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