Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuoc hoi o snippets" » "thuoc ho o snippets", "thuoc moi o snippets", "thuoc nhom o snippets", "thuoc hoi co snippets", "thuoc hoi _ snippets", "thuoc hoc o 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: (((("thuoc hoi o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thuoc hoi o snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuoc hoi o snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuoc hoi o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.