Perhaps you should try some spelling variations:
"canh tranh cad snippets" » "canh tranh cac snippets", "canh tranh cai snippets", "canh trinh cad snippets", "anh tranh cad snippets", "can tranh cad snippets", "hanh tranh cad snippets"
"dung va code snippets" » "dung va core 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: (((("canh tranh cad snippets") or ("dung va code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("canh tranh cad snippets") OR ("dung va code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( canh tranh cad snippets ) or ( dung va code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("canh tranh cad snippets") or ("dung va code snippets"))) or ("locating bug code snippets"))*.