Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran huu can snippets" » "tran duc can snippets", "tran huu chan snippets", "tran huu han snippets", "tran hau can 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: (((("tran huu can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran huu can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran huu can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran huu can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.