Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoan le moi snippets" » "khoan ke moi snippets", "hon le moi snippets", "khoan va moi snippets", "khoan le hoi snippets", "khoan ve moi snippets", "khoan le mai 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: (((("khoan le moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoan le moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoan le moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoan le moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.