Perhaps you should try some spelling variations:
minh trinh » dinh trinh, minh tinh, sinh trinh
mach lai » mach lac, mach vi, cach lam
ton giao » toan giao, so giao, don gian
thi minh » chi minh, thi hanh, thi bich
trinh su » trinh tu, trinh san, trinh cau
hoc giao » hoc cao
tu mach » tu cach, tu manh, tu hach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu mach lai su - ton giao ) or ( thi minh trinh su - hoc giao ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu mach lai su - ton giao ) OR ( thi minh trinh su - hoc giao )).
• Adding a wildcard symbol may retrieve word variants: (( tu mach lai su - ton giao ) or ( thi minh trinh su - hoc giao ))*.