Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, nhung don
trinh cua » tinh cua, trinh luat, trinh quan
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
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: ((hoc hien) or (ho chieu)) xanh - hanh trinh cua ((nhung cong) OR (hang cong)) dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (ho chieu)) xanh - hanh trinh cua ((nhung cong) OR (hang cong)) dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hien) or (ho chieu)) xanh - hanh trinh cua ((nhung cong) OR (hang cong)) dan than cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (ho chieu)) xanh - hanh trinh cua ((nhung cong) OR (hang cong)) dan than cau*.