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