Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc quan ho snippets" » "luc luan ho snippets", "tac quan ho snippets", "qua quan ho snippets", "luc quan he snippets", "luc quan ha snippets", "luc quan so 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: (((("luc quan ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc quan ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc quan ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc quan ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.