Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
hanh trinh » hanh chinh
cua thuong » cua truong, cua phuong, ca thuong
cong vang » cong lang, cong quang, cong ngang
vang than » sang than, van than, cang thang
hoc danh » hoc dan, hoc anh, hoc hanh
than cap » khan cap, thanh lap, thanh cac
cho hoc » co hoc, khoa hoc

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: cho hoc danh - ((canh tranh) or (hanh trinh)) cua thuong cong vang than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cho hoc danh - ((canh tranh) OR (hanh trinh)) cua thuong cong vang than cap.
• Adding a wildcard symbol may retrieve word variants: cho hoc danh - ((canh tranh) or (hanh trinh)) cua thuong cong vang than cap*.