Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"dao qing li snippets" » "dao quang li snippets", "dao dong li snippets", "dao minh li snippets", "dao qing liu snippets", "dao ying li snippets", "dao qiong liu snippets", "dao qing li slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("dao qing li snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao qing li snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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