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