Perhaps you should try some spelling variations:
"voi dong cong snippets" » "voi dong code snippets", "voi duong cong snippets", "voi dung cong snippets", "voi dang cong snippets", "hoi dong cong snippets", "voi cong cong snippets", "loi dong 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 ("voi dong 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 ("voi dong cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java java snippets ) or ( voi dong cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java java snippets") or ("voi dong cong snippets"))) or ("locating bug core snippets"))*.