Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"dan he khoa snippets" » "dan che khoa snippets", "dan ke khoa snippets", "dan te khoa snippets", "dan ve khoa snippets", "dan de khoa snippets", "dan he khoa 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.

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