Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"using real java snippets" » "using metal java snippets", "using raw java snippets", "using real java slippers"
"vo quan luan snippets" » "vao quan luan snippets", "va quan luan snippets", "vo xuan luan snippets", "vo quan lan snippets", "vo quan luan slippers"

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

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