Perhaps you should try some spelling variations:
"chu hung tran snippets" » "chu huong tran snippets", "chu quang tran snippets", "chu hung thang snippets", "chau hung tran snippets", "chu ung tran snippets", "phu hung tran snippets", "chu hung tran slippers"
"python using a snippets" » "python using a slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("chu hung tran snippets") or ("python using a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chu hung tran snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chu hung tran snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chu hung tran snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.