Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"vu truong cao snippets" » "vu truong dai snippets", "vu trong cao snippets", "vu thuong cao snippets", "va truong cao snippets"
"using real java snippets" » "using metal java snippets", "using raw java snippets"

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

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