Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"trong trinh ha snippets" » "trong tinh ha snippets", "trang trinh ha snippets", "trong thinh ha snippets", "trong trinh han snippets", "trong trinh hoa snippets", "trong trinh nha snippets", "trong trinh ha slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"

Try widening your search to All Fields.

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