Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"doi va hieu snippets" » "doi van hieu snippets", "doi va dieu snippets", "doi cao hieu snippets", "hoi va hieu snippets", "noi va hieu snippets", "dai va hieu snippets", "doi va hieu 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: (((("doi va hieu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( doi va hieu snippets ) or ( python using java snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("doi va hieu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.