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