Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"dung using java snippets" » "dung ung java snippets", "dung sinh java snippets", "dung uong java snippets", "dung using data snippets"
"van trinh co snippets" » "van thinh co snippets", "van tinh co snippets", "dan trinh co snippets", "van trinh do snippets", "van trinh cong snippets", "van trinh hoa snippets"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van trinh co snippets") OR ("dung using java snippets"))) OR ("locating bugs code snippets"))~.
• Removing quotes may allow a broader search: (((( van trinh co snippets ) or ( dung using java snippets ))) or ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("van trinh co snippets") or ("dung using java snippets"))) or ("locating bugs code snippets"))*.