Perhaps you should try some spelling variations:
"thanh phuc code snippets" » "thanh phuoc code snippets", "hanh phuc code snippets", "thanh pho code snippets", "thanh phuc co snippets", "thanh phuc code slippers"
"dung cac code snippets" » "luong cac code snippets", "dung cho code snippets", "dung tai code snippets", "dung cac cong snippets", "dung cac co snippets", "dung cac che snippets", "dung cac 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: (((("thanh phuc code snippets") or ("dung cac code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thanh phuc code snippets") OR ("dung cac code snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("thanh phuc code snippets") or ("dung cac code snippets"))) or ("locating bug code snippets"))*.