Perhaps you should try some spelling variations:
"xuan trinh cau snippets" » "qua trinh cau snippets", "xuan dinh cau snippets", "xuan kinh cau snippets", "xuan trinh chat snippets", "xuan trinh chao snippets", "xuan trinh tu 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: (((("xuan trinh 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: (((("xuan trinh cau snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xuan trinh cau snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuan trinh cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.