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