Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dac tinh doc snippets" » "dac tinh code snippets", "may tinh doc snippets", "va tinh doc snippets", "ha tinh doc snippets", "dac trinh doc snippets", "dac tinh hoc snippets", "dac tinh doi 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: (((("dac tinh doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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