Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"van trinh cho snippets" » "van thinh cho snippets", "van tinh cho snippets", "dan trinh cho snippets", "van trinh chao snippets", "van trinh co snippets", "van trinh chat snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung java java snippets") or ("van trinh cho snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("van trinh cho snippets"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( van trinh cho snippets ))) or ( locating bug code snippets ))*.