Perhaps you should try some spelling variations:
"hai long cong snippets" » "hai long code snippets", "hai luong cong snippets", "hai cong cong snippets", "hai tong cong snippets", "hai phong cong snippets", "hai duong 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: (((("using java java snippets") or ("hai long cong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java java snippets") OR ("hai long cong snippets"))) OR ("locating bug core snippets"))*.
• Removing quotes may allow a broader search: (((( using java java snippets ) or ( hai long cong snippets ))) or ( locating bug core snippets ))*.