Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc dao le snippets" » "duc dao le snippets", "lua dao le snippets", "luc cao le snippets", "luc do le snippets", "luc dao ve snippets", "luc hao le 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 dao le 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 dao le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc dao le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc dao le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.