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