Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"con lam hoc snippets" » "con lai hoc snippets", "lon lam hoc snippets", "nong lam hoc snippets", "con am hoc snippets", "con lam hoa snippets", "con tam hoc 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: (((("con lam hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("con lam hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con lam hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con lam hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.