Perhaps you should try some spelling variations:
"duong xuan cuc snippets" » "dong xuan cuc snippets", "luong xuan cuc snippets", "duong quan cuc snippets", "duong xuan duc snippets", "duong xuan ruc snippets", "duong xuat cuc 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: (((("duong xuan cuc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong xuan cuc snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong xuan cuc snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong xuan cuc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.