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