Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong tao cau snippets" » "dong tai cau snippets", "dong dao cau snippets", "dong bao cau snippets", "dong tao cu snippets", "dong tao cao snippets", "dong tao sau 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 tao cau 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 tao cau snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong tao cau snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong tao cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.