Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dung thu dac snippets" » "ung thu dac snippets", "dung phu dac snippets", "dung thi dac snippets", "dung thu duc snippets", "dung thu xac snippets", "dung thu da 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 thu dac snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("dung thu dac snippets"))) OR ("locating bug core snippets")).
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