Perhaps you should try some spelling variations:
"thieu tinh code snippets" » "trieu tinh code snippets", "chieu tinh code snippets", "thien tinh code snippets", "thieu tinh co snippets", "thieu tinh code slippers"
"dung dung code snippets" » "duong dung code snippets", "ung dung code snippets", "dung ung code snippets", "dung dung cong snippets", "dung dung co snippets", "dung dung de snippets", "dung dung 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: (((("thieu tinh code snippets") or ("dung dung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thieu tinh code snippets") OR ("dung dung code snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("thieu tinh code snippets") or ("dung dung code snippets"))) or ("locating bug code snippets"))*.