Perhaps you should try some spelling variations:
"cach de hoan snippets" » "cach de code snippets", "cach le hoang snippets", "cach duc hoan snippets", "cach ve hoang snippets", "cac de hoan snippets", "sach de hoan snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data snippets"

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