Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sung nam cac snippets" » "quang nam cac snippets", "dong nam cac snippets", "sung nam cao snippets", "sung 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: (((("sung 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: (((("sung nam cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sung nam cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sung nam cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.