Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien nhanh » hien hanh, thien thanh, tien thanh
cua khong » cua phuong, cua thuong, cua cong
hua khong » hoa khong, hoac khong, phuc khong
tang dan » tang van, tung dan, tang luan
khan cap » than cap, khoan cam, phan cac
khan ap » han ap, khan dam

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 nhanh - thanh trung ((cua khong) OR (hua khong)) tang dan ((khan cap) or (khan ap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - thanh trung ((cua khong) OR (hua khong)) tang dan ((khan cap) OR (khan ap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien nhanh - thanh trung ((cua khong) OR (hua khong)) tang dan ((khan cap) or (khan ap))".
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - thanh trung ((cua khong) OR (hua khong)) tang dan ((khan cap) or (khan ap))*.