Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
thanh tung » thanh cong
ho chieu » hoc thieu, doi chieu, mot chieu
tung cua » trung cua, tuong cua, dung cua
ban cong » bang cong, van cong, phan cong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap
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 (theo chieu))) OR (doi chi)) tinh - thanh tung cua ban cong tan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((ho chieu) OR (theo chieu))) or (doi chi)) tinh - thanh tung cua ban cong tan toan cau~".
• Adding a wildcard symbol may retrieve word variants: ((((ho chieu) OR (theo chieu))) or (doi chi)) tinh - thanh tung cua ban cong tan toan cau*.