Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dat chin cham snippets" » "dat chinh chau snippets", "dat chinh nham snippets", "dat thi cham snippets", "dap chinh cham snippets", "dat thien cham snippets", "mat chinh cham 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 java java snippets") or ("dat chin cham snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dat chin cham snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dat chin cham snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dat chin cham snippets"))) or ("locating bug code snippets"))*.