Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"data dan hoc snippets" » "data phan hoc snippets", "dao dan hoc snippets", "hat dan hoc snippets", "data van hoc snippets", "data dan toc snippets", "data dai hoc 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: (((("data dan hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("data dan hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( data dan hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("data dan hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.