Perhaps you should try some spelling variations:
"sinh trong code snippets" » "sinh truong code snippets", "sinh trung code snippets", "dinh trong code snippets", "sinh trong cong snippets", "sinh trong co snippets", "sinh trong che snippets", "sinh trong code slippers"
"dung ung code snippets" » "dung trung code snippets", "dung quang code snippets", "dung chung code snippets", "dung ung co snippets", "dung ung code slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("sinh trong code snippets") or ("dung ung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sinh trong code snippets") OR ("dung ung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sinh trong code snippets ) or ( dung ung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sinh trong code snippets") or ("dung ung code snippets"))) or ("locating bug code snippets"))*.