Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khac dan he snippets" » "khac duan he snippets", "nhac dan he snippets", "khau dan he snippets", "khac dan ve snippets", "khac dan de snippets", "khac dan ke 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: (((("khac dan he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khac dan he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khac dan he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khac dan he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.