Perhaps you should try some spelling variations:
"thong cac che snippets" » "trong cac che snippets", "phong cach che snippets", "thong cua che snippets", "thong cac he snippets", "thong cac chien snippets", "thong cac chat snippets"
"dan cfd code snippets" » "dan 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: (((("dan cfd code snippets") or ("thong cac che snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan cfd code snippets") OR ("thong cac che snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan cfd code snippets ) or ( thong cac che snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan cfd code snippets") or ("thong cac che snippets"))) or ("locating bug code snippets"))*.