Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"duc dung lua slippers" » "duc hung lua slippers", "duc cuong lua slippers", "duc phung lua slippers", "duc dung luan slippers", "duc dung luat slippers", "duc dung cua slippers", "duc dung lua slippery", "duc dung lua 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 ("duc dung lua slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("duc dung lua slippers"))) OR ("locating bug code snippets")).
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