Perhaps you should try some spelling variations:
"tri cong code snippets" » "tri cong cong snippets", "tri cong co snippets", "tri cong che snippets", "tai cong code snippets", "thi cong code snippets", "trien cong code snippets", "tri cong code slippers"
"dung hung code snippets" » "dung chung code snippets", "dung nhung code snippets", "dung huong code snippets", "dung hung 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: (((("tri cong code snippets") or ("dung hung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tri cong code snippets") OR ("dung hung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tri cong code snippets ) or ( dung hung code snippets ))) or ( locating bug code snippets )).
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