Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luat chon do snippets" » "lua chon do snippets", "luat cho do snippets", "luat hon do snippets", "luat chong doc snippets", "luat chon loc snippets", "luat chon dia 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 chon 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: (((("luat chon do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luat chon do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luat chon do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.