Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"dung tran mach slippers" » "dung tren mach slippers", "hung tran mach slippers", "dang tran mach slippers", "dung tran manh slippers", "dung trinh mach slippers", "dung trong mach slippers", "dung tran mach slippery", "dung tran mach grippers"
"locating bug code snippets" » "locating bug core snippets", "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 tran mach slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("dung tran mach slippers"))) OR ("locating bug code snippets")).
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