Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan cong da snippets" » "tran cong da snippets", "toan thong da snippets", "doan cuong da snippets", "toan cong dan snippets", "toan cong dac snippets", "toan cong dau 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 cong da 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 cong da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan cong da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan cong da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.