Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
chi xanh » chi anh, chi danh, chi hanh
doi chi » doi khi
tuan cu » tuan tu, quan cua, tuan thu
luan » lan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - hanh trinh quan ((hang cong) OR (bang cong)) van ((tuan cu) OR (quan luan))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi xanh - hanh trinh quan ((hang cong) OR (bang cong)) van ((tuan cu) or (quan luan))~".
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - hanh trinh quan ((hang cong) OR (bang cong)) van ((tuan cu) or (quan luan))*.