Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dac tan dung snippets" » "dac tran dung snippets", "dac tin dung snippets", "dac van dung snippets", "duc tan dung snippets", "dac san dung snippets", "dai tan dung snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("dac tan dung snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dac tan dung snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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