Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huy tiem con snippets" » "huy thien con snippets", "huy hien con snippets", "huy viet con snippets", "huy tiem can snippets", "huy tien cong snippets", "huy hiem chon 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: (((("huy tiem con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("huy tiem con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huy tiem con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huy tiem con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.