Perhaps you should try some spelling variations:
"ung dung code snippets" » "ung dung cong snippets", "ung dung co snippets", "ung dung de snippets", "ung dung code slippers"
"khoi can code snippets" » "khoa can code snippets", "khoi nang code snippets", "hoc can code snippets", "khoi cfd code snippets", "khoi can 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: (((("khoi can code snippets") or ("ung dung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi can code snippets") OR ("ung dung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi can code snippets ) or ( ung dung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi can code snippets") or ("ung dung code snippets"))) or ("locating bug code snippets"))*.