Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van duc danh slippers" » "van duc anh slippers", "van duc manh slippers", "van duc hanh slippers", "van duy danh slippers", "van du danh slippers", "tran duc danh slippers", "van duc danh slippery", "van duc danh 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: (((("python using java snippets") or ("van duc danh slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("van duc danh slippers"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("van duc danh slippers"))) or ("locating bug code snippets"))*.