Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"thanh doc va snippets" » "than doc va snippets", "thanh do va snippets", "nhanh doc va snippets", "thanh duoc va snippets", "thanh hoc va snippets", "thanh duc va snippets", "thanh doc va 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: (((("thanh doc va snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thanh doc va snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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