Perhaps you should try some spelling variations:
huong huong » thuong phuong, muong khuong, thuong luong
hanh trinh » canh tranh, hanh chinh
trinh suat » trinh luat, trinh sat, trinh quan
suat huong » luat huong, sat huong, luat thuong
hien manh » hien hanh, tien manh, hieu manh
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 manh - hanh trinh suat huong huong dan ((toan cau) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien manh - hanh trinh suat huong huong dan ((toan cau) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hien manh - hanh trinh suat huong huong dan ((toan cau) or (van ban))*.