Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"phan cho pin snippets" » "phan co pin snippets", "phan che pin snippets", "han cho pin snippets", "phan cho tin snippets", "phan cho sinh snippets", "phan cho phan snippets"

Try widening your search to All Fields.

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