Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"dung ngan lua slippers" » "dung nhan lua slippers", "dung luan lua slippers", "dung ngan xua slippers", "dung ngan cua slippers", "dung ngon lua slippers", "dung ngan lua slippery", "dung ngan 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 ("dung ngan lua slippers"))) or ("locating bug code snippets"))~.
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