Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung san doc snippets" » "dung san code snippets", "dong san doc snippets", "dung sai doc snippets", "dung luan doc snippets", "dung nang doc snippets", "dung than doc snippets", "dung gian doc 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: (((("python using java snippets") or ("dung san doc snippets"))) or ("locating bug core snippets"))~.
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