Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan tac so snippets" » "luan tach so snippets", "luan dac so snippets", "luan thuc so snippets", "luan tai so snippets", "luan tac co snippets", "luan tac su 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 tac 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 tac so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan tac so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan tac so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.