Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"diem su cao snippets" » "diem du cao snippets", "diem cau cao snippets", "diem cua cao snippets", "diem cu cao snippets", "diem vu cao snippets", "diem su co 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: (((("diem su cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("diem su cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( diem su cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("diem su cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.