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