Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets"
"hai duong code slippers" » "hai duong co slippers", "hai duong cong slippers", "hai duong che slippers", "dai cuong code slippers", "hai phong code slippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java java snippets") or ("hai duong code slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java java snippets") OR ("hai duong code slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java java snippets ) or ( hai duong code slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java java snippets") or ("hai duong code slippers"))) or ("locating bug code snippets"))*.