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