Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan dat doc snippets" » "luat dat doc snippets", "luan dac doc snippets", "luan day doc snippets", "luan dat duoc snippets", "luan dat nuoc 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 dat doc 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 dat doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan dat doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan dat doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.