Perhaps you should try some spelling variations:
"vi luong cong snippets" » "vi luong code snippets", "vi dung cong snippets", "vi trong cong snippets", "vi cong cong snippets", "dai luong cong snippets", "van luong cong snippets", "hai luong cong snippets"
"locating bug core snippets" » "locating bug code snippets"
"using a java snippets" » "using _ 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 a java snippets") or ("vi luong cong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using a java snippets") OR ("vi luong cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using a java snippets ) or ( vi luong cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using a java snippets") or ("vi luong cong snippets"))) or ("locating bug core snippets"))*.