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