Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung hoc toc snippets" » "dong hoc toc snippets", "dung thuoc toc snippets", "trung hoc toc snippets", "dung hoc hoc snippets", "dung hoc thuoc snippets", "dung hoc toeic snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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