Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dung tri man snippets" » "dung tai man snippets", "dung tren man snippets", "nhung tri man snippets", "dung tri mang snippets", "dung tri mac snippets", "dung tri van snippets"

Try widening your search to All Fields.

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