Perhaps you should try some spelling variations:
cong ngang » cong nhan, cong quang, cong lang
nang huong » nang thuong, nang luong, hang thuong
thien anh » thien danh, tien anh, thien thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
huong cua » dung cua
cong van » cong vang, cong san, song van
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 ((thien anh) or (hieu manh)) - nang huong cua cong ((cong van) or (cong ngang)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (hieu manh)) - nang huong cua cong ((cong van) OR (cong ngang)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (hieu manh)) - nang huong cua cong ((cong van) or (cong ngang)) toan cau*.