Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"nhat toan trac snippets" » "nhat tan trac snippets", "thuat toan trac snippets", "nhat trang trac snippets", "nhat toan tran snippets", "nhat thoan tran snippets", "nhat toan tap snippets"
"locating bug core snippets" » "locating bug code snippets"

Try widening your search to All Fields.

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