Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung thong cau snippets" » "dung thong code snippets", "dung thuong cau snippets", "dung trong cau snippets", "dong thong cau snippets", "dung thong cac snippets", "dung thong cap snippets", "dung thong tu 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 ("dung thong cau snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luong java java snippets") OR ("dung thong cau snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( luong java java snippets ) or ( dung thong cau snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong java java snippets") or ("dung thong cau snippets"))) or ("locating bug core snippets"))*.