Perhaps you should try some spelling variations:
"cong huong com snippets" » "cong thuong com snippets", "cong luong com snippets", "cong hung com snippets", "cong huong co snippets", "cong huong cuoc snippets", "cong thuong con snippets"
"dung tin java snippets" » "dong tin java snippets", "luong tin java snippets", "dung tren java snippets", "dung trinh java snippets", "dung think java snippets", "dung tin va 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: (((("dung tin java snippets") or ("cong huong com snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung tin java snippets") OR ("cong huong com snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung tin java snippets ) or ( cong huong com snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung tin java snippets") or ("cong huong com snippets"))) or ("locating bug code snippets"))*.