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