Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc khoi con snippets" » "buoc khoi con snippets", "cuoc khoi con snippets", "phuc khoi con snippets", "luc khi con snippets", "luc khoe con snippets", "luc khoi can 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: (((("luc khoi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc khoi con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc khoi con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc khoi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.