Perhaps you should try some spelling variations:
trinh thiet » trinh viet, trinh thi
hanh trinh » canh tranh, hanh chinh
thiet hung » thuyet hung, viet hung, hiep hung
hien hanh » dieu hanh
hung cong » nhung cong, hung cuong, phung cong
dan chinh » dang chinh, lan chinh, van chinh
chinh cau » chinh chau, chinh ca, chinh can
cong dan » cong san, cong tan, huong dan

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 hanh - hanh trinh thiet hung cong dan chinh cau~.
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - hanh trinh thiet hung cong dan chinh cau*.