Perhaps you should try some spelling variations:
thanh thuong » thanh huong, thanh chuong, thanh phuong
thuong cua » huong cua, thong cua, truong cua
thong cong » trong cong, tong cong, thong thong
vang quang » van quang, dang quang, hang quang
vung quang » dung quang, hung quang, luong quang
hien hanh » dieu hanh
hang cong » dang cong, hang nong, bang cong

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 - thanh thuong cua ((hang cong) or (thong cong)) ((vang quang) OR (vung quang)) nam~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - thanh thuong cua ((hang cong) OR (thong cong)) ((vang quang) OR (vung quang)) nam.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien hanh - thanh thuong cua ((hang cong) or (thong cong)) ((vang quang) OR (vung quang)) nam".
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - thanh thuong cua ((hang cong) or (thong cong)) ((vang quang) OR (vung quang)) nam*.