Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"van cong trinh snippets" » "van dong trinh snippets", "van phong trinh snippets", "phan cong trinh snippets", "van cong trinh slippers"
"using a java snippets" » "using _ java snippets", "using a java slippers"

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