Perhaps you should try some spelling variations:
"trinh phan cac snippets" » "trinh han cac snippets", "trinh quan cac snippets", "thanh phan cac snippets", "trinh nhan cach snippets", "trinh phan dau snippets", "trinh phan lap snippets"
"hanh java java snippets" » "hanh 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: (((("hanh java java snippets") or ("trinh phan cac snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hanh java java snippets") OR ("trinh phan cac snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hanh java java snippets ) or ( trinh phan cac snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hanh java java snippets") or ("trinh phan cac snippets"))) or ("locating bug code snippets"))*.