Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"han che con snippets" » "han che cong snippets", "han che mon snippets", "han chi con snippets", "phan che con snippets", "nhan che con snippets", "hanh che con 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: (((("han che con snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han che con snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han che con snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han che con snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.