Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong cung cac snippets" » "dong cung code snippets", "dong chung cac snippets", "dong hung cac snippets", "dong cong cac snippets", "dong cuong cac snippets", "dong cung cap snippets", "dong dung cac snippets"
"luong java java snippets" » "luong va java snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("luong java java snippets") or ("dong cung cac snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luong java java snippets") OR ("dong cung cac snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( luong java java snippets ) or ( dong cung cac snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong java java snippets") or ("dong cung cac snippets"))) or ("locating bug core snippets"))*.