Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"duc dan lua snippets" » "duoc dan lua snippets", "duc tan lua snippets", "duc dai lua snippets", "duc dan luan snippets", "duc dan luat snippets", "duc dan cua 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 ("duc dan lua snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( duc dan lua snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("duc dan lua snippets"))) or ("locating bug core snippets"))*.