Perhaps you should try some spelling variations:
"cong thanh code snippets" » "dong thanh code snippets", "cong trinh code snippets", "cong tan code snippets", "cong thanh cong snippets", "cong thanh de snippets", "cong thanh code slippers"
"dong bug code snippets" » "dong bang code snippets", "dong hung code snippets", "dong cung code snippets", "dong bug code slippers"
"locating bug code snippets" » "locating bug code slippers"

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 thanh code snippets") or ("dong bug code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong thanh code snippets") OR ("dong bug code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong thanh code snippets ) or ( dong bug code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong thanh code snippets") or ("dong bug code snippets"))) or ("locating bug code snippets"))*.