Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dung ban dac snippets" » "dung san dac snippets", "dung dan dac snippets", "dong ban dac snippets", "dung ban dan snippets", "dung ban dau snippets", "dung ban sac snippets"

Try widening your search to All Fields.

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