Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"van cong mong snippets" » "van cong dong snippets", "van cong cong snippets", "van cong nong snippets", "van dong mong snippets", "van phong mong snippets", "phan cong mong snippets"
"locating bug core snippets" » "locating bug code 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: (((("using java code snippets") OR ("van cong mong snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( van cong mong snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("van cong mong snippets"))) or ("locating bug core snippets"))*.