Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huu cau den snippets" » "huu chau den snippets", "chua cau den snippets", "huu chan den snippets", "huu cap den snippets", "huu cau de snippets", "huu hau den 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 cau 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 cau den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huu cau den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huu cau den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.