Perhaps you should try some spelling variations:
trong thuong » trong tuong, cong thuong, dong thuong
thong thuong » thong thong, hang thuong, cong thuong
hien hanh » dieu hanh
trung lap » trung cap, truong lam, truong lop
trung ap » trung cap, trung tam, trung dai
dam toan » dan toan, tam toan, dam thanh
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - thanh ((trung ap) OR (trung lap)) ((trong thuong) OR (thong thuong)) dam toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien hanh - thanh ((trung ap) or (trung lap)) ((trong thuong) OR (thong thuong)) dam toan tap~".
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - thanh ((trung ap) or (trung lap)) ((trong thuong) OR (thong thuong)) dam toan tap*.