Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"may trinh dinh snippets" » "may trinh kinh snippets", "may trinh sinh snippets", "may trinh dung snippets", "may tinh dinh snippets", "lap trinh dinh snippets", "quy trinh dinh snippets", "may trinh dinh 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: (((("dung java java snippets") or ("may trinh dinh snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("may trinh dinh snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( may trinh dinh snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("may trinh dinh snippets"))) or ("locating bugs code snippets"))*.