Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don van phan slippers" » "don van phong slippers", "don van thanh slippers", "don luan phan slippers", "doan van phan slippers", "dong van phan slippers", "do van phan slippers", "don van phan slippery", "don 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: (((("don 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: (((("don van phan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don van phan slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don van phan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.