Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
truong va » truong dai, truong cao, truong dao
trung va » trang va, trung ha, trung tam
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (theo tieu)) tinh - thanh ((trung va) OR (truong va)) nhung cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (theo tieu)) tinh - thanh ((trung va) OR (truong va)) nhung cong tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (theo tieu)) tinh - thanh ((trung va) OR (truong va)) nhung cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (theo tieu)) tinh - thanh ((trung va) OR (truong va)) nhung cong tan toan cao*.