Perhaps you should try some spelling variations:
"n trinh chiu snippets" » "n trinh chu snippets", "n trinh chi snippets", "n trinh chinh snippets", "p trinh chiu snippets", "anh trinh chiu snippets", "dan trinh chiu snippets"
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs 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: (((("n trinh chiu snippets") or ("python using data snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("n trinh chiu snippets") OR ("python using data snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( n trinh chiu snippets ) or ( python using data snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("n trinh chiu snippets") or ("python using data snippets"))) or ("locating bug code snippets"))*.