Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan thi son snippets" » "tran thi son snippets", "toan tai son snippets", "toan chi son snippets", "toan thai son snippets", "toan thi song snippets", "toan thi mon 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 thi son 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 thi son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan thi son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan thi son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.