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