Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"trinh he code snippets" » "trinh han code snippets", "trinh hoa code snippets", "trinh ky code snippets", "trinh he code slippers"
"dong luc code snippets" » "nang luc code snippets", "dong bug code snippets", "dong lbm code snippets", "dong luc cong snippets", "dong luc 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: (((("trinh he code snippets") or ("dong luc code snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh he code snippets") OR ("dong luc code snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( trinh he code snippets ) or ( dong luc code snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh he code snippets") or ("dong luc code snippets"))) or ("locating bugs code snippets"))*.