Perhaps you should try some spelling variations:
"using java core snippets" » "using data core snippets"
"chon cac doi snippets" » "cho cac doi snippets", "thong cac doi snippets", "hoc cac doi snippets", "chon cac dai snippets", "chon cac toi snippets", "chon cau doi snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

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