Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi bien cac snippets" » "khi ben cac snippets", "khi dien cac snippets", "che bien cac snippets", "khi vien cac snippets", "khi bien ca 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: (((("khi bien cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khi bien cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi bien cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi bien cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.