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