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