Perhaps you should try some spelling variations:
"dung nhung code snippets" » "dung chung code snippets", "dung nhan code snippets", "dung trung code snippets", "dung nhung cong snippets", "dung nhung con snippets", "dung nhung code slippers"
"thi hanh code snippets" » "thi hanh de snippets", "thi hanh cong snippets", "thi hanh cad snippets", "thi thanh code snippets", "thi hanh 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: (((("dung nhung code snippets") or ("thi hanh code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung nhung code snippets") OR ("thi hanh code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung nhung code snippets ) or ( thi hanh code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung nhung code snippets") or ("thi hanh code snippets"))) or ("locating bug code snippets"))*.