Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan chon so snippets" » "lua chon so snippets", "luan chinh so snippets", "luan chung so snippets", "luan hon so snippets", "luan con so snippets", "luan chon loc 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: (((("luan chon so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luan chon so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan chon so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan chon so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.