Perhaps you should try some spelling variations:
"lochating bug code snippets" » "locating bug code snippets", "lochating bug code slippers", "lochating bug core snippets"
"python using java snippets" » "python using data snippets", "python using java slippers"
"luan anh ta snippets" » "luan danh ta snippets", "tuan anh ta snippets", "lan anh ta snippets", "luan anh tu snippets", "luan anh va snippets", "luan anh tuan snippets", "luan anh ta slippers"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("luan anh ta snippets") or ("python using java snippets"))) or ("lochating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luan anh ta snippets") OR ("python using java snippets"))) OR ("lochating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan anh ta snippets ) or ( python using java snippets ))) or ( lochating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan anh ta snippets") or ("python using java snippets"))) or ("lochating bug code snippets"))*.