Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan mao can snippets" » "luan bao can snippets", "luan khao can snippets", "lluan mau can snippets", "luan mao van snippets", "luan mao con snippets", "luan mat can 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 mao can 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 mao can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan mao can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan mao can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.