Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tran duy doi snippets" » "tran duy code snippets", "tran duc doi snippets", "tran quy doi snippets", "tran thuy doi snippets", "tran duy doc snippets", "tran duy dot snippets", "tran dung 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: (((("tran duy doi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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