Perhaps you should try some spelling variations:
"trinh lua cua snippets" » "trinh luat cua snippets", "trinh luan cua snippets", "trinh cua cua snippets", "trinh qua cua snippets", "trinh xua cua snippets"
"dung cac che snippets" » "luong cac che snippets", "dung cho che snippets", "dung tai che snippets", "dung cac he snippets", "dung cac chien snippets", "dung cac chat 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: (((("dung cac che snippets") or ("trinh lua cua snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cac che snippets") OR ("trinh lua cua snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cac che snippets ) or ( trinh lua cua snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cac che snippets") or ("trinh lua cua snippets"))) or ("locating bug code snippets"))*.