Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thong long » thang long, thong cong, thong dong
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
trinh han » trinh quan
han thong » han thuong, hang thong, nhan thong
long tinh » cong tinh, trong tinh, luong tin
toan cau » toan cao, toan ban, toan tap

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 han thong long tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien hanh)) - hanh trinh han thong long tinh toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien hanh)) - hanh trinh han thong long tinh toan cau*.