Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"ngan van lua snippets" » "nhan van lua snippets", "ngan han lua snippets", "ngan hang lua snippets", "ngan van luan snippets", "ngan van lu snippets", "ngan van luc snippets", "ngan van lua 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: (((("ngan van lua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngan van lua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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