Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
quan thong » quang thong, quan trong, xuan thong
hien xanh » hien hanh, hien nhanh, chieu xanh
cong viet » cong viec, thong viet, nang viet
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 (dieu hanh)) - hanh trinh quan thong ((cong trinh) or (cong viet)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (dieu hanh)) - hanh trinh quan thong ((cong trinh) OR (cong viet)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (dieu hanh)) - hanh trinh quan thong ((cong trinh) or (cong viet)) toan cau*.