Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"trinh hoa trac slippers" » "trinh do trac slippers", "trinh han trac slippers", "trinh hoi trac slippers", "trinh hoa trang slippers", "trinh hoan tran slippers", "trinh hoa trac slippery", "trinh hoa 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 ("trinh hoa 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 ("trinh hoa trac slippers"))) OR ("locating bug code snippets")).
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