Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"long khoa co snippets" » "luong khoa co snippets", "lon khoa co snippets", "dong khoa co snippets", "long hoa co snippets", "long khoa cong snippets", "long khoa hoc 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: (((("long khoa co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("long khoa co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( long khoa co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("long khoa co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.