Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"dang hoi trac slippers" » "dang khoi trac slippers", "dang hoai trac slippers", "dong hoi trac slippers", "dang hoi trach slippers", "dang hoi tran slippers", "dang hoi tac slippers", "dang hoi trac slippery", "dang hoi trac 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 ("dang hoi trac slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("dang hoi trac slippers"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("dang hoi trac slippers"))) or ("locating bug code snippets"))*.