Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan hoc chiu snippets" » "dan hoc chu snippets", "dan coc chiu snippets", "dan hoc chi snippets", "van hoc chiu snippets", "dan toc chiu snippets", "dai hoc chiu 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: (((("dan hoc chiu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan hoc chiu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan hoc chiu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan hoc chiu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.