Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tranh vai » trang vai, tranh cai, tranh va
vai nhung » va nhung, voi nhung, vap nhung
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
ho chau » ha chau, ho chu, khoa chau
o chau » a chau, 3 chau, moc chau

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: ((ho chau) OR (o chau)) tinh - canh tranh vai nhung cong trinh ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chau) or (o chau)) tinh - canh tranh vai nhung cong trinh ((toan cau) OR (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: ((ho chau) or (o chau)) tinh - canh tranh vai nhung cong trinh ((toan cau) OR (toan tap))*.