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