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