Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac duoc dao slippers" » "cac nuoc dao slippers", "cac cuoc dao slippers", "cac quoc dao slippers", "cac duc dao slippers", "cac doc dao slippers", "cac duoc dai slippers", "cac duoc dao slippery", "cac duoc dao grippers"
"locating bug code snippets" » "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: (((("python using java snippets") or ("cac duoc dao slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("cac duoc dao slippers"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("cac duoc dao slippers"))) or ("locating bug code snippets"))*.