Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"trinh cau tren snippets" » "trinh chat tren snippets", "trinh chao tren snippets", "trinh tu tren snippets", "trinh cu tren snippets", "trinh dau tren snippets", "trinh ca tren snippets"
"locating bug core snippets" » "locating bug code snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java code snippets") or ("trinh cau tren snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("trinh cau tren snippets"))) OR ("locating bug core snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("trinh cau tren snippets"))) or ("locating bug core snippets"))*.