Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tro khi con snippets" » "trao khoi con snippets", "truoc khi con snippets", "tro choi con snippets", "tro khi cong snippets", "tro chi con snippets", "tro khi co 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: (((("tro khi 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: (((("tro khi con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tro khi con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tro khi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.