Perhaps you should try some spelling variations:
"cong thon code snippets" » "cong thong code snippets", "nong thon code snippets", "cong hon code snippets", "cong thon core snippets"
"trinh cau cong snippets" » "trinh chat cong snippets", "trinh chao cong snippets", "trinh tu cong snippets", "trinh cac cong snippets", "trinh cuu cong snippets", "trinh cao 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: (((("cong thon code snippets") or ("trinh cau cong snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong thon code snippets") OR ("trinh cau cong snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong thon code snippets ) or ( trinh cau cong snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong thon code snippets") or ("trinh cau cong snippets"))) or ("locating bug code snippets"))*.