Perhaps you should try some spelling variations:
"thep mang may tinh f.c." » "tren mang may tinh f.c.", "ghep tang may tinh f.c.", "hop mang may tinh f.c.", "thep mang may tinh bac.", "thep mang may tinh duc.", "thep mang may tinh pc."
"thep bang lam tinh hoc." » "thien bang lam tinh hoc.", "thai bang lam tinh hoc.", "te bang lam tinh hoc.", "thep mang lam tinh hoc.", "thep nang lam tinh hoc.", "thep quang lam tinh hoc.", "thep bang ha tinh hoc.", "thep bang ban tinh hoc.", "thep bang dac tinh hoc.", "thep bang lam sinh hoc.", "thep bang lam tin hoc.", "thep bang lam hinh hoc."
"thuc hanh lam dinh cac." » "thuc thanh lap dinh cac.", "thuc hanh kem dinh cac.", "thuc hanh va dinh cac.", "thuc hanh nam dinh cac.", "thuc hanh lam linh cac.", "thuc hanh tham dinh cac.", "thuc hanh lam tinh cach.", "thuc hanh lam dinh chuc.", "thuc hanh lam dinh chau."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("thep mang may tinh f.c.") or ("thep bang lam tinh hoc."))) or ("thuc hanh lam dinh cac."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thep mang may tinh f.c.") OR ("thep bang lam tinh hoc."))) OR ("thuc hanh lam dinh cac.")).
• Removing quotes may allow a broader search: (((( thep mang may tinh f.c. ) or ( thep bang lam tinh hoc. ))) or ( thuc hanh lam dinh cac. )).
• Adding a wildcard symbol may retrieve word variants: (((("thep mang may tinh f.c.") or ("thep bang lam tinh hoc."))) or ("thuc hanh lam dinh cac."))*.