Perhaps you should try some spelling variations:
"using rate code snippets" » "using waste code snippets", "using data code snippets", "using raw code snippets", "using rate core snippets"
"dung viet cac snippets" » "nang viet cac snippets", "cong viet cac snippets", "mang viet cac snippets", "dung vien cac snippets", "dung viet ca snippets", "dung viet bac snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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