Perhaps you should try some spelling variations:
"dong chuan cau snippets" » "dong chan cau snippets", "dong thuan cau snippets", "dong chuyen cau snippets", "dong chuan chau snippets", "dong chua cau snippets", "dong chuan chat snippets"
"dung java java snippets" » "dung va java 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 chuan 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 chuan cau snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong chuan cau snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong chuan cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.