Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"toc cao cong snippets" » "toc cao code snippets", "toc cac cong snippets", "toc cao dang snippets", "toc cua cong snippets", "hoc cao cong snippets", "toc dao cong snippets", "toc co cong 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: (((("toc cao cong snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc cao cong snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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