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"
"vi phan van snippets" » "vi pham van snippets", "vi thanh van snippets", "vi luan van snippets", "va phan van snippets", "ve phan van snippets", "vi phan van slippers"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"vi phan van snippets\") OR (\"using real java snippets\"))) OR (\"locating bugs code snippets\"))~".
• Removing quotes may allow a broader search: (((( vi phan van snippets ) OR ( using real java snippets ))) OR ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("vi phan van snippets") OR ("using real java snippets"))) OR ("locating bugs code snippets"))*.