Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh co ke snippets" » "danh cho ke snippets", "doanh co ke snippets", "anh co ke snippets", "danh co kem snippets", "danh co ket 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: (((("danh co ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh co ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh co ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh co ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.