Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh trinh » canh tranh, hanh chinh
cua khong » hua khong, cua phuong, cua thuong
cua tong » cua cong, cua dong, cua nong
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan tu » phan tu, han tu, chon tu

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) or (dieu hanh)) - hanh trinh ((cua tong) or (cua khong)) cong dan chan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (dieu hanh)) - hanh trinh ((cua tong) OR (cua khong)) cong dan chan tu.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) or (dieu hanh)) - hanh trinh ((cua tong) or (cua khong)) cong dan chan tu*.