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