Perhaps you should try some spelling variations:
"thep xanh va tinh f.c." » "heo xanh va tinh f.c.", "thep bang va tinh f.c.", "thep hinh va tinh f.c.", "thep xanh va tinh bac.", "thep xanh va tinh duc.", "thep xanh va tinh pc.", "thep hanh va tinh f.c.", "thep xanh a tinh f.c.", "thep anh va tinh f.c.", "thep xanh may tinh f.c."
"thep hanh lam tinh hoc." » "thep hinh lam tinh hoc.", "them thanh lam tinh hoc.", "thuc hanh lam tinh hoc.", "thep thanh lap tinh hoc.", "thep hanh kem tinh hoc.", "thep hanh va tinh hoc.", "thep hanh may tinh hoc.", "thep hanh ha tinh hoc.", "thep hanh ban tinh hoc.", "thep hanh lam sinh hoc.", "thep hanh lam tin hoc.", "thep hanh lam hinh 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 va tinh f.c.") or ("thep hanh lam tinh hoc."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("thep xanh va tinh f.c.") OR ("thep hanh lam tinh hoc.")).
• Removing quotes may allow a broader search: (( thep xanh va tinh f.c. ) or ( thep hanh lam tinh hoc. )).
• Adding a wildcard symbol may retrieve word variants: (("thep xanh va tinh f.c.") or ("thep hanh lam tinh hoc."))*.