Perhaps you should try some spelling variations:
nhiet tach » chiet tach
nhanh mang » nhanh lang, hanh mang, nhanh quang
tranh luan » trinh luan, trinh luat, doanh luan
hoc nhiet » hoc thiet, hoc nghien, hoc hien
cong cong » cong dong, trong cong, dung cong
tranh ban » trinh ban, tranh hang, doanh ban
mang cua » manh cua, dung cua, ban cua
cong tac » cong ty
tran van » luan van

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 - nhanh mang cua cong cong tac ((((tranh ban) OR (tran van))) or (tranh luan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nhiet tach - nhanh mang cua cong cong tac ((((tranh ban) OR (tran van))) OR (tranh luan))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc nhiet tach - nhanh mang cua cong cong tac ((((tranh ban) OR (tran van))) or (tranh luan))*".