Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dung si rang snippets" » "dung sai rang snippets", "dung so rang snippets", "dung vi rang snippets", "dung si hang snippets", "dung sinh rang snippets", "dung si trong 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 si rang 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 si rang snippets"))) OR ("locating bug core snippets")).
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