Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"how van nhan snippets" » "how van phan snippets", "how van thanh snippets", "how danh nhan snippets", "hoc van nhan snippets", "ho van nhan snippets", "hoa van nhan snippets", "how van nhan slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("how van nhan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("how van nhan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( how van nhan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("how van nhan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.