Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao cuu tong snippets" » "dao cuu cong snippets", "dao cuu long snippets", "dao cuu tinh snippets", "dao huu tong snippets", "dao cau tong snippets", "dao chu tong 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 cuu tong 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 cuu tong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao cuu tong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao cuu tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.