Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hau sach cau snippets" » "khau sach cau snippets", "cau sach cau snippets", "ham sach cau snippets", "hau sach cap snippets", "hau sach dau snippets", "hau sach mau 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: (((("hau sach 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: (((("hau sach cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hau sach cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hau sach cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.