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