Perhaps you should try some spelling variations:
"using cfd core snippets" » "using 3d core snippets", "using c core snippets", "using cfd code snippets"
"anh trac code snippets" » "sinh trac code snippets", "anh tuan code snippets", "anh thuc code snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using cfd core snippets") or ("anh trac code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using cfd core snippets") OR ("anh trac code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using cfd core snippets ) or ( anh trac code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using cfd core snippets") or ("anh trac code snippets"))) or ("locating bug code snippets"))*.