Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung lai do snippets" » "dung tai do snippets", "dung lam do snippets", "dung sai do snippets", "dung lai de snippets", "dung lai bo snippets", "dung lai dong 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 lai do snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung lai do snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung lai do snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung lai do snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.