Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuoc so cua snippets" » "thuoc bo cua snippets", "thuoc ho cua snippets", "thuoc co cua snippets", "thuoc do cua 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 so cua 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 so cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuoc so cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuoc so cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.