Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh trinh » canh tranh, hanh chinh
cong trong » cong thuong, duong trong, cong trinh
trong danh » trong doanh, truong danh, trong anh
hien xanh » hien hanh, chieu xanh, hien khanh
trinh cua » tinh cua, trinh luat, trinh quan
tuan cau » toan cau, quan cau, tuan cu
toan ban » van ban

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 xanh) OR (hien nhanh)) - hanh trinh cua cong trong danh ((tuan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - hanh trinh cua cong trong danh ((tuan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (hien nhanh)) - hanh trinh cua cong trong danh ((tuan cau) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (hien nhanh)) - hanh trinh cua cong trong danh ((tuan cau) or (toan ban))*.