Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
dong huong » dong thuong, dong duong, dinh huong
cong huong » cong thuong, cong luong, cong hung
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
dang van » hoang van, hang va

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