Perhaps you should try some spelling variations:
nhiet tach » chiet tach
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc nhiet » hoc thiet, hoc nghien, hoc hien
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
cong tan » cong tac, cong san, cong thanh
toan ban » van 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 tranh cua thong ((cong dong) or (cong tan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nhiet tach - hanh tranh cua thong ((cong dong) OR (cong tan)) toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc nhiet tach - hanh tranh cua thong ((cong dong) or (cong tan)) toan ban*.