Perhaps you should try some spelling variations:
"trinh chat lua snippets" » "tinh chat lua snippets", "trinh luat lua snippets", "trinh han lua snippets", "trinh chat cua snippets", "trinh chat va snippets", "trinh chat huu snippets"
"dung cfd core snippets" » "dung cho core snippets", "dung cua core snippets", "dung co core snippets", "dung cfd code snippets"
"locating bug code 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 cfd core snippets") or ("trinh chat lua snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cfd core snippets") OR ("trinh chat lua snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cfd core snippets ) or ( trinh chat lua snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cfd core snippets") or ("trinh chat lua snippets"))) or ("locating bug code snippets"))*.