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