Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu hang cap snippets" » "thi hang cap snippets", "thuc hanh cap snippets", "thu huong cap snippets", "thu hang ca snippets", "thu hang cau snippets", "thu hang cac 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: (((("thu hang cap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu hang cap snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu hang cap snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu hang cap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.