Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"trinh cac hung slippers" » "trinh cau hung slippers", "trinh chat hung slippers", "trinh chao hung slippers", "trinh cac chung slippers", "trinh cac huong slippers", "trinh cac ung slippers", "trinh cac hung slippery", "trinh cac hung 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 cac hung 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 cac hung slippers"))) OR ("locating bug code snippets")).
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