Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"toc viet ca snippets" » "hoc viet ca snippets", "thuc viet ca snippets", "ngoc viet ca snippets", "toc viet ha snippets", "toc viet co snippets", "toc viet a 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: (((("toc viet ca snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc viet ca snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc viet ca snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc viet ca snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.