Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao via cua snippets" » "dao va cua snippets", "dao viet cua snippets", "dao giao cua snippets", "dao gia cua snippets", "dao gian cua snippets", "dao giau 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: (((("dao via cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao via cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao via cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao via cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.