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