Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao doan van slippers" » "dao doanh van slippers", "dao dan van slippers", "dao hoan van slippers", "dao doan va slippers", "dao hoang van slippers", "dao luan van slippers", "dao doan van slippery", "dao doan van 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: (((("dao doan van slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao doan van slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao doan van slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao doan van slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.