Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"doan van lu snippets" » "doan va lu snippets", "hoang van lu snippets", "luan van lu snippets", "doan van luc snippets", "doan van du snippets", "doan van le 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: (((("python using java snippets") OR ("doan van lu snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( doan van lu snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("doan van lu snippets"))) or ("locating bug core snippets"))*.