Perhaps you should try some spelling variations:
"va luong cong snippets" » "va luong code snippets", "va dung cong snippets", "va trong cong snippets", "va cong cong snippets", "van luong cong snippets", "va tuong cong snippets", "va huong 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: (((("va luong 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: (((("va luong cong snippets") OR ("using java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( va luong cong snippets ) or ( using java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("va luong cong snippets") or ("using java java snippets"))) or ("locating bug core snippets"))*.