Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao thai cua snippets" » "dao thi cua snippets", "do thai cua snippets", "da thai cua snippets", "dao than cua snippets", "dao tai cuc snippets", "dao tri cua 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 thai cua 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 thai cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao thai cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao thai cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.