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