Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan trinh o snippets" » "lap trinh o snippets", "dan trinh o snippets", "lan tranh o snippets", "lan trinh do snippets", "lan trinh co snippets", "lan trinh mo 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 trinh o 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 trinh o snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan trinh o snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan trinh o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.