Perhaps you should try some spelling variations:
"tang thi code snippets" » "tang thi cong snippets", "tang thi hoe snippets", "dang thi code snippets", "tang tai code snippets", "hoang thi code snippets", "tang thi code slippers"
"trinh ky code snippets" » "trinh ky 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: (((("trinh ky code snippets") or ("tang thi code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh ky code snippets") OR ("tang thi code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh ky code snippets ) or ( tang thi code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh ky code snippets") or ("tang thi code snippets"))) or ("locating bug code snippets"))*.