Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"duc tang cho snippets" » "duc tang code snippets", "duc thang cho snippets", "duc tan cho snippets", "tuc tang cho snippets", "duc trang cho snippets", "duc sang cho snippets", "duc hang cho 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: (((("duc tang cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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