Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thac van cau snippets" » "thai van cau snippets", "thao van cau snippets", "thuc van cau snippets", "thac van dau snippets", "thac van hau snippets", "thac van chat 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: (((("thac van cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thac van cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thac van cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thac van cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.