Perhaps you should try some spelling variations:
thien hach » thien thanh
thanh dung » thanh duong, thanh tung, thanh hung
thuong han » thuong mai, thuong va, thuong gap
hien hanh » dieu hanh
danh cham » hanh cham, doanh chau, thanh cham
dung dat » dung va, dung tai
dat hang » dat khanh, dat quang, tat thang
han danh » van danh, phan dang, nhan dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien hach) or (hien hanh)) - thanh dung dat hang thuong han danh cham~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien hach) OR (hien hanh)) - thanh dung dat hang thuong han danh cham*.