Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan thiet de snippets" » "luan thiet de snippets", "dan thiet de snippets", "can thiet de snippets", "lan thiet ke snippets", "lan thiet yeu snippets", "lan thuyet de 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: (((("lan thiet de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lan thiet de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan thiet de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan thiet de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.