Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"mong cac cau snippets" » "cong cac cau snippets", "dong cac cau snippets", "mong cai cau snippets", "mong cac mau snippets", "mong bac cau snippets", "mong ca cau snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("mong cac cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mong cac cau snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mong cac cau snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mong cac cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.