Perhaps you should try some spelling variations:
hien hanh » dieu hanh
cua thong » cua thuong, cua khong, cua tong
thong dan » thong van, tuong dan, thong den
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien hanh - anh tang cua thong thong dan toan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - anh tang cua thong thong dan toan ban*.