Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan dat doc snippets" » "toan dam doc snippets", "toan dai doc snippets", "tan dat doc snippets", "toan dat duoc snippets", "toan day doc snippets", "toan dat nuoc 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 dat doc 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 dat doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan dat doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan dat doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.