Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nang thi hoc snippets" » "dang thi hoc snippets", "tang thi hoc snippets", "nang tai hoc snippets", "nang thai hoc snippets", "nang tri hoc snippets", "nang thi hoa 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: (((("nang thi 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: (((("nang thi hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang thi hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang thi hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.