Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong tai do snippets" » "dung tai do snippets", "luong tai do snippets", "cong tac do snippets", "dong thai do snippets", "dong tai co snippets", "dong tai so 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: (((("dong tai 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: (((("dong tai do snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong tai do snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong tai do snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.