Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luat hoi he snippets" » "luat moi he snippets", "luat so he snippets", "luat dai he snippets", "luat khoi he snippets", "luat hoi ha snippets", "luat hoi ve 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: (((("luat hoi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luat hoi he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luat hoi he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luat hoi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.