Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
thanh tung » thanh cong
tong cong » trong cong, cong cong, dung cong
ho chieu » hoc thieu, doi chieu, mot chieu
cua tong » cua cong, cua dong, cua nong
cong san » cong tac
san chan » san chang, dan chan, san chay
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (ho chieu)) xanh - ((thanh trung) OR (thanh tung)) cua tong cong san chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) xanh - ((thanh trung) OR (thanh tung)) cua tong cong san chan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (ho chieu)) xanh - ((thanh trung) OR (thanh tung)) cua tong cong san chan cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) xanh - ((thanh trung) OR (thanh tung)) cua tong cong san chan cau*.