Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoan mot do snippets" » "khoan hoi do snippets", "chon mot do snippets", "han mot do snippets", "khoan mot doi snippets", "khoan mot so snippets", "khoan mot co 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: (((("khoan mot 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: (((("khoan mot do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoan mot do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoan mot do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.