Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
canh trinh » canh tranh, hanh trinh, canh tinh
doi chieu » doc hieu, mot chieu, thi chieu
trinh vat » trinh van, trinh luat, sinh vat
vat thong » va thong, vat trong, mat thong
ho chieu » theo chieu, hoc thieu, mot chieu
cong san » cong tac
san phan » san pham, van phan, sat phan
phan cau » phan dau, phan cac, phan tu
doi chi » doi khi

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 chieu) OR (((doi chieu) OR (doi chi)))) tinh - canh trinh vat thong cong san phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (((doi chieu) OR (doi chi)))) tinh - canh trinh vat thong cong san phan cau~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (((doi chieu) OR (doi chi)))) tinh - canh trinh vat thong cong san phan cau*.