Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"using raw java snippets" » "using real java snippets", "using a java snippets", "using low java snippets", "using raw java slippers"
"vi tran van snippets" » "vi luan van snippets", "vi trang van snippets", "v tran van snippets", "vi than van snippets", "vi tran 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 tran van snippets\") OR (\"using raw java snippets\"))) OR (\"locating bugs code snippets\"))~".
• Removing quotes may allow a broader search: (((( vi tran van snippets ) OR ( using raw java snippets ))) OR ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("vi tran van snippets") OR ("using raw java snippets"))) OR ("locating bugs code snippets"))*.