Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc van doi snippets" » "luoc van doi snippets", "luu van doi snippets", "duc van doi snippets", "luc van loi snippets", "luc van noi snippets", "luc van do 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 van doi 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 van doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc van doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc van doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.