Perhaps you should try some spelling variations:
"van cong cong snippets" » "van cong code snippets", "van cong dong snippets", "van trong cong snippets", "van dung cong snippets", "van dong cong snippets", "van phong cong snippets", "phan cong cong snippets"
"locating bug core snippets" » "locating bug code snippets"
"using java java snippets" » "using data java snippets"

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

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