Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"trinh chat ap slippers" » "tinh chat ap slippers", "trinh luat ap slippers", "trinh han ap slippers", "trinh chat ban slippers", "trinh chat ran slippers", "trinh chat bao slippers", "trinh chat ap slippery", "trinh chat ap 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 chat ap 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 chat ap slippers"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("trinh chat ap slippers"))) or ("locating bug code snippets"))*.