Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi luat so snippets" » "thai luat so snippets", "thi luan so snippets", "thue luat so snippets", "thi thuat so snippets", "thi luat bao 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: (((("thi luat so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi luat so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi luat so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi luat so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.