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