Perhaps you should try some spelling variations:
thanh tung » thanh cong
tuong cong » truong cong, trong cong, tong cong
trinh toan » tinh toan, thanh toan, trinh han
doi chieu » doi chi, ho chieu, mot chieu
doc hieu » toc thieu, hoc thieu, hoc hien
ba tuong » ban tuong, bao tuong, va tuong
toan cau » 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 (doc hieu)) sach - ((thanh trung) OR (thanh tung)) ba tuong cong trinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) sach - ((thanh trung) OR (thanh tung)) ba tuong cong trinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (doc hieu)) sach - ((thanh trung) OR (thanh tung)) ba tuong cong trinh toan cau".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doc hieu)) sach - ((thanh trung) OR (thanh tung)) ba tuong cong trinh toan cau*.