Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets", "using java code slippers"
"dung nguon dam snippets" » "dung nguoi dam snippets", "luong nguon dam snippets", "dung ngan dam snippets", "dung nguon cam snippets", "dung nguong dan snippets", "dung nguoi dao snippets", "dung nguon dam slippers"
"locating bug code snippets" » "locating bug core snippets", "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java code snippets") or ("dung nguon dam snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("dung nguon dam snippets"))) OR ("locating bug code snippets")).
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