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"
"do duc lua snippets" » "do duc luat snippets", "do duoc luan snippets", "do duoc luat snippets", "dao duc lua snippets", "do duy lua snippets", "do duc lua 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: (((("do duc lua snippets") OR ("python using java snippets"))) OR ("locating bugs code snippets"))~.
• Removing quotes may allow a broader search: (((( do duc lua snippets ) or ( python using java snippets ))) or ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("do duc lua snippets") or ("python using java snippets"))) or ("locating bugs code snippets"))*.