Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » thong cong, hang cong, nhung don
tieu hanh » dieu hanh, tiem hanh, tien hanh
trinh cua » tinh cua, trinh luat, trinh quan
dung cong » dung trong
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu hanh - hanh trinh cua ((nhung cong) or (dung cong)) dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu hanh - hanh trinh cua ((nhung cong) OR (dung cong)) dan than cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu hanh - hanh trinh cua ((nhung cong) or (dung cong)) dan than cau*.