Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi lan loai snippets" » "thi lac loai snippets", "thi phan loai snippets", "thi nhan loai snippets", "thi hanh loai snippets", "thi nang loai snippets", "thi lien loai 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: (((("thi lan loai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi lan loai snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi lan loai snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi lan loai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.