Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong khi can snippets" » "cong thai can snippets", "khong khi can snippets", "co khi can snippets", "cong khoi can snippets", "cong khi ban snippets", "cong khi con 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: (((("cong khi can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong khi can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong khi can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong khi can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.