Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao tra cuu snippets" » "dao tru cuu snippets", "dan tra cuu snippets", "dao trang cuu snippets", "dao tra cau snippets", "dao trau cua snippets", "dao trua 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 tra cuu 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 tra cuu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao tra cuu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao tra cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.