Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung lam doc snippets" » "dung lam code snippets", "dung luan doc snippets", "dung tai doc snippets", "dung dat doc snippets", "dung lam duoc snippets", "dung lap doc snippets", "dung lam dong 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 lam doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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