Perhaps you should try some spelling variations:
nhiet nang » nhiet dong, viet nang, nhieu tang
nhung cong » dung cong, thong cong, hang cong
cong ngang » cong nhan, cong quang, cong lang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hieu van » hieu va, thien van, lieu va
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu van) OR (nhiet nang)) - canh tranh cua nhung cong ngang ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu van) or (nhiet nang)) - canh tranh cua nhung cong ngang ((toan cau) OR (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu van) or (nhiet nang)) - canh tranh cua nhung cong ngang ((toan cau) OR (toan tap))*.