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 luan van snippets" » "li luan van snippets", "vi lua van snippets", "vi quan van snippets", "vi luan 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 luan van snippets\") OR (\"using raw java snippets\"))) OR (\"locating bugs code snippets\"))~".
• Removing quotes may allow a broader search: (((( vi luan van snippets ) OR ( using raw java snippets ))) OR ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("vi luan van snippets") OR ("using raw java snippets"))) OR ("locating bugs code snippets"))*.