Perhaps you should try some spelling variations:
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
hanh hang » thanh hang, hang hang, hanh han
cua thong » cua thuong, cua khong, cua tong
thong bai » thong tai, nhung bai, thong xay
hang cua » mang cua, hang ca, huong cua
hang tai » hang va, dung tai
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 hang cua thong ((thong bai) or (hang tai)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien hanh)) - hanh hang cua thong ((thong bai) OR (hang tai)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien hanh)) - hanh hang cua thong ((thong bai) or (hang tai)) toan cau*.