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