Perhaps you should try some spelling variations:
nghiep thuc » nghiem thuc, nghiem thuoc, nghe thuc
doanh khoa » toan khoa
thanh toan » thanh hoa, tinh toan
thuc cong » thuoc cong, thu cong, chuc cong
hoc doanh » hoa doanh, hoc danh, hoc dan
mach hoc » cach hoc, dich hoc, anh hoc
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
su mach » su sach
hoi van » hoi va, hoi dan, hai van
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: su mach hoc tap, nghiep thuc cong hoc doanh khoa hoc xa hoi van ((thanh toan) OR (thanh san))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su mach hoc tap, nghiep thuc cong hoc doanh khoa hoc xa hoi van ((thanh toan) OR (thanh san))".
• Adding a wildcard symbol may retrieve word variants: su mach hoc tap, nghiep thuc cong hoc doanh khoa hoc xa hoi van ((thanh toan) OR (thanh san))*.