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