Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"danh ca khai snippets" » "dan ca khai snippets", "doanh cua khai snippets", "danh cho khai snippets", "danh cao khai snippets", "danh ca thai snippets", "danh va khai snippets", "danh ca khai 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: (((("danh ca khai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh ca khai snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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