Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"cao nang cho snippets" » "cao dang cho snippets", "cam nang cho snippets", "cao tang cho snippets", "cao nang chon snippets", "cao ngang cho snippets", "cao nang cao 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 ("cao nang cho snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("cao nang cho snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( cao nang cho snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("cao nang cho snippets"))) or ("locating bug code snippets"))*.