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