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