Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan ho hoi snippets" » "toan hoc hoi snippets", "toan khoa hoi snippets", "toan cao hoi snippets", "toan hoa hoi snippets", "toan hoi hoi 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 ho hoi 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 ho hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan ho hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan ho hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.