Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tri quan do snippets" » "trinh quan do snippets", "hai quan do snippets", "mai quan do snippets", "tri quan doi snippets", "tri quan doc snippets", "tri quang do 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: (((("tri quan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tri quan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tri quan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tri quan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.