Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"than nam cac snippets" » "thanh nam cac snippets", "nhan nam cac snippets", "tan nam cac snippets", "than nam cao snippets", "than nam sach 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: (((("than nam cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("than nam cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( than nam cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("than nam cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.