Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"trinh tri chat snippets" » "trinh tai chat snippets", "trinh thi chat snippets", "tinh tri chat snippets", "trinh tra chat snippets", "trinh trinh chat snippets", "trinh tri nhan snippets"
"locating bug core snippets" » "locating bug code snippets"

Try widening your search to All Fields.

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