Perhaps you should try some spelling variations:
"ninh viet cuc snippets" » "sinh vien cuc snippets", "anh viet cuc snippets", "ninh viet duc snippets", "ninh viet thuc snippets", "ninh viet co snippets"
"dung bug code snippets" » "dung dung code snippets", "dung hung code snippets", "dung rung code snippets", "dung bug core snippets"
"locating bug code snippets" » "locating bug core 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: (((("ninh viet cuc snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ninh viet cuc snippets") OR ("dung bug code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ninh viet cuc snippets ) or ( dung bug code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ninh viet cuc snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))*.