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"
"viet hung van snippets" » "viet huong van snippets", "viet trung van snippets", "viet phung van snippets", "viet nhung van snippets", "viet dung van snippets", "viet hung van slippers"

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

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