Perhaps you should try some spelling variations:
"can dan trinh snippets" » "can dan tinh snippets", "can van trinh snippets", "can hanh trinh snippets", "canh dan trinh snippets", "cac dan trinh snippets", "can ban trinh snippets", "can dan trinh 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: (((("can dan trinh snippets") or ("python using a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("can dan trinh snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can dan trinh snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can dan trinh snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.