Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"trinh binh lua slippers" » "trinh kinh lua slippers", "tinh binh lua slippers", "trinh dinh lua slippers", "trinh binh luan slippers", "trinh benh lua slippers", "trinh binh luu slippers", "trinh binh lua slippery", "trinh binh 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 ("trinh binh 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 ("trinh binh lua slippers"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("trinh binh lua slippers"))) or ("locating bug code snippets"))*.