Perhaps you should try some spelling variations:
"thep xanh may tinh f.c." » "thep bang may tinh f.c.", "thep hinh may tinh f.c.", "thep hanh may tinh f.c.", "thep xanh cay tinh f.c.", "thep mang may tinh f.c.", "thep xanh may tinh hoc.", "thep xanh may tinh bac.", "thep xanh may tinh duc."
"thep xanh a tanh f.c." » "thep bang a tanh f.c.", "thep hinh a tanh f.c.", "thep xanh a tan f.c."
"heo xanh lam tin hoc." » "heo hanh lam tin hoc.", "heo dinh lam tin hoc.", "heo van lam tin hoc.", "heo xanh lam tinh hoc.", "heo xanh lam tan hoc.", "heo xanh luat tin hoc.", "heo xanh lam sinh hoc."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("thep xanh may tinh f.c.") or ("thep xanh a tanh f.c."))) or ("heo xanh lam tin hoc."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thep xanh may tinh f.c.") OR ("thep xanh a tanh f.c."))) OR ("heo xanh lam tin hoc."))*.
• Removing quotes may allow a broader search: (((( thep xanh may tinh f.c. ) or ( thep xanh a tanh f.c. ))) or ( heo xanh lam tin hoc. ))*.