Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan du hoai snippets" » "tran duc hoai snippets", "toan cau hoai snippets", "toan do hoai snippets", "toan du hoa snippets", "toan tu hoai 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 du hoai 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 du hoai snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan du hoai snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan du hoai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.