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