Perhaps you should try some spelling variations:
"hoan doi trinh snippets" » "hoan doc trinh snippets", "hoan doi tinh snippets", "hoan dong trinh snippets", "hoa doi trinh snippets", "hoat doi trinh snippets", "hoang dai trinh snippets", "hoan doi trinh slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("hoan doi trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoan doi trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoan doi trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoan doi trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.