Perhaps you should try some spelling variations:
nhiet tach » chiet tach
hanh trinh » canh tranh, hanh chinh
hoc nhiet » hoc thiet, hoc nghien, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
dang cong » dung cong
trinh han » trinh quan
cua dang » cua cong, cua ban
han ban » hang ban, van ban, can 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 nhiet tach - hanh trinh cua dang cong trinh han ban~.
• Adding a wildcard symbol may retrieve word variants: hoc nhiet tach - hanh trinh cua dang cong trinh han ban*.