Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu tuan che snippets" » "chu tuan che snippets", "thu trang che snippets", "thu thuat che snippets", "thu quan che snippets", "thu luan che 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 tuan che 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 tuan che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu tuan che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu tuan che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.