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"
"anh so code snippets" » "anh son code snippets", "anh co code snippets", "anh so 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: (((("anh so code snippets") or ("dung nhung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("anh so code snippets") OR ("dung nhung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( anh so code snippets ) or ( dung nhung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("anh so code snippets") or ("dung nhung code snippets"))) or ("locating bug code snippets"))*.