Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh suat » trinh luat, trinh sat, trinh quan
dong huong » dong thuong, dong duong, cong huong
hien xanh » hien hanh, hien nhanh, chieu xanh
suat dong » suat dung, suat tong, suat thong
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 suat dong huong dan ((toan cau) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh trinh suat dong huong dan ((toan cau) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh trinh suat dong huong dan ((toan cau) or (van ban))*.