Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
chan cap » khan cap, than cap, phan cac
cao cap » cao chat
ho may » hoc may, hoa may, cho may

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho may tinh - hanh trinh cua ((hang cong) OR (bang cong)) dan ((chan cap) or (cao cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho may tinh - hanh trinh cua ((hang cong) OR (bang cong)) dan ((chan cap) OR (cao cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho may tinh - hanh trinh cua ((hang cong) OR (bang cong)) dan ((chan cap) or (cao cap))".
• Adding a wildcard symbol may retrieve word variants: ho may tinh - hanh trinh cua ((hang cong) OR (bang cong)) dan ((chan cap) or (cao cap))*.