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