Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"mo tran khoa snippets" » "mo toan khoa snippets", "mo san khoa snippets", "mo nhan khoa snippets", "m tran khoa snippets", "ma tran khoa snippets", "co tranh khoa snippets", "mo tran khoa 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: (((("mo tran khoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mo tran khoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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