Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi sanh hoc snippets" » "do sanh hoc snippets", "doi hanh hoc snippets", "doi anh hoc snippets", "doi sinh hoc snippets", "doi danh 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: (((("doi sanh 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: (((("doi sanh hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi sanh hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi sanh hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.