Perhaps you should try some spelling variations:
chia minh » chi minh, chinh minh, thi minh
dinh hoc » hinh hoc, tinh hoc, dich hoc
hoc chia » hoc chi, hoc khia, hoc chinh
chu minh » chi minh, thu minh, chu manh
di sinh » vi sinh, ki sinh, diem sinh
hoc chu » hoc cau, hoc cho, hoc thuc
kiem » kien, kim

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( kiem dinh hoc chia minh ) or ( di sinh hoc chu minh ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( kiem dinh hoc chia minh ) OR ( di sinh hoc chu minh )).
• Adding a wildcard symbol may retrieve word variants: (( kiem dinh hoc chia minh ) or ( di sinh hoc chu minh ))*.