Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"phan tap duc snippets" » "phan lap duc snippets", "han tap duc snippets", "phan tu duc snippets", "phan tap suc snippets", "phan tap tuc snippets", "phan tap luc snippets"

Try widening your search to All Fields.

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