Perhaps you should try some spelling variations:
"nang chon code snippets" » "nang cho code snippets", "nang cao code snippets", "nang hoc code snippets", "nang chon code slippers"
"dong cac code snippets" » "duong cac code snippets", "dong bac code snippets", "dung cac code snippets", "dong cac cong snippets", "dong cac co snippets", "dong cac che snippets", "dong cac 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: (((("nang chon code snippets") or ("dong cac code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nang chon code snippets") OR ("dong cac code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang chon code snippets ) or ( dong cac code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang chon code snippets") or ("dong cac code snippets"))) or ("locating bug code snippets"))*.