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