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