Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc cho ke snippets" » "luc cao ke snippets", "nuoc cho ke snippets", "luat cho ke snippets", "luc cho he snippets", "luc cho ky snippets", "luc cho xe 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 cho ke 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 cho ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc cho ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc cho ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.