Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"python using java snippets" » "python using data snippets", "python using java slippers"
"van toi su snippets" » "van tai su snippets", "van thi su snippets", "van toan su snippets", "van thoi su snippets", "van toi uu snippets", "van oi su snippets", "van toi su slippers"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van toi su snippets") OR ("python using java snippets"))) OR ("locating bugs code snippets"))~.
• Removing quotes may allow a broader search: (((( van toi su snippets ) or ( python using java snippets ))) or ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("van toi su snippets") or ("python using java snippets"))) or ("locating bugs code snippets"))*.