Perhaps you should try some spelling variations:
khong cong » thong cong, khong cang, chong cong
phap tinh » phap sinh, phap tieng, phap tang
than cua » nhan cua, thai cua, gian cua
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cau » toan cao, toan ban, toan tap
ban cua » ban quan

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 ((phap tinh) OR (phap nang)) - hung ((than cua) OR (ban cua)) khong cong san toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((phap tinh) or (phap nang)) - hung ((than cua) OR (ban cua)) khong cong san toan cau~".
• Adding a wildcard symbol may retrieve word variants: theo ((phap tinh) or (phap nang)) - hung ((than cua) OR (ban cua)) khong cong san toan cau*.