Perhaps you should try some spelling variations:
thi chieu » thi chien, thi hieu, theo chieu
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
trung vu » truong va, trung ha, truong v
trung va » truong va, trang va, trung ha
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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 (thi chieu)) tinh - thanh ((trung vu) OR (trung va)) dung cong tan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (thi chieu)) tinh - thanh ((trung vu) OR (trung va)) dung cong tan toan cau~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (thi chieu)) tinh - thanh ((trung vu) OR (trung va)) dung cong tan toan cau*.