Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"ham van tra snippets" » "pham van tra snippets", "nham van tra snippets", "ha van tra snippets", "ham van tri snippets", "ham van tru snippets", "ham dan tra snippets", "ham van tra 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: (((("ham van tra snippets") OR ("python using java snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( ham van tra snippets ) or ( python using java snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("ham van tra snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.