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