Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung duoc vo snippets" » "dung duoc code snippets", "dong duoc vo snippets", "cung duoc vo snippets", "dung quoc vo snippets", "dung duoc va snippets", "dung duoc co snippets", "dung duoc do 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: (((("dung duoc vo snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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