Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi con se snippets" » "khi cong se snippets", "chi con se snippets", "khi co se snippets", "khi con de snippets", "khi con 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: (((("khi con se snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khi con se snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi con se snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi con se snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.