Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung le minh slippers" » "dung len minh slippers", "dung he minh slippers", "dung de minh slippers", "dung le dinh slippers", "dung le minh slippery", "dung le minh grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung le minh slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung le minh slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("dung le minh slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.