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