Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan cach cac snippets" » "dan cac cac snippets", "dan canh cac snippets", "nhan cach cac snippets", "dan ca cac snippets", "dan tich cac snippets", "dan sach cap 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: (((("dan cach 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: (((("dan cach cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan cach cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan cach cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.