Perhaps you should try some spelling variations:
"dung cua che snippets" » "dung luan che snippets", "dung cho che snippets", "dung cuu che snippets", "dung cua chu snippets", "dung cua cha snippets"
"tong cfd code snippets" » "tong cot code snippets", "tong cuc code snippets", "tong cac code snippets", "tong cfd core snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code 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 cua che snippets") or ("tong cfd code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cua che snippets") OR ("tong cfd code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cua che snippets ) or ( tong cfd code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cua che snippets") or ("tong cfd code snippets"))) or ("locating bug code snippets"))*.