Perhaps you should try some spelling variations:
"gian dan code snippets" » "gian lang code snippets", "gian dan de snippets", "gian dan code slippers"
"cong cau code snippets" » "cong cu code snippets", "cong chuc code snippets", "thong cau code snippets", "cong cau cong snippets", "cong cau de snippets", "cong cfd code snippets", "cong cau code slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("gian dan code snippets") or ("cong cau code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("gian dan code snippets") OR ("cong cau code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gian dan code snippets ) or ( cong cau code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gian dan code snippets") or ("cong cau code snippets"))) or ("locating bug code snippets"))*.