Perhaps you should try some spelling variations:
nhiet tach » chiet tach
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
hoc nhiet » hoc thiet, hoc nghien, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
cua thong » cua thuong, cua khong, cua tong
cong ta » cong tac, cong tan, cong tai
ta van » tan van, tap van, va van

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

• Adding a wildcard symbol may retrieve word variants: hoc nhiet tach - hanh trinh cua thong cong ta van ban*.