Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"van trinh doi snippets" » "van thinh doi snippets", "van tinh doi snippets", "dan trinh doi snippets", "van trinh do snippets", "van trinh hoi snippets"
"dung java java snippets" » "dung va java snippets"

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 trinh doi snippets\") OR (\"dung java java snippets\"))) OR (\"locating bugs code snippets\"))~".
• Removing quotes may allow a broader search: (((( van trinh doi snippets ) OR ( dung java java snippets ))) OR ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("van trinh doi snippets") OR ("dung java java snippets"))) OR ("locating bugs code snippets"))*.