Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc van anh slippers" » "duc va anh slippers", "duc tan anh slippers", "duc manh anh slippers", "duc van thanh slippers", "duc van minh slippers", "duc tuan anh slippers", "duc van anh slippery", "duc van anh grippers"
"locating bug code snippets" » "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: (((("duc van anh slippers") OR ("python using java snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( duc van anh slippers ) or ( python using java snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("duc van anh slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.