Perhaps you should try some spelling variations:
"dong xuan cau snippets" » "hoang xuan cau snippets", "dinh xuan cau snippets", "dong cua cau snippets", "dong quan cau snippets", "dong xuan can snippets", "dong xuan cang 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 xuan 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 xuan cau snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong xuan cau snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong xuan cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.