Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, theo chu, thi chieu
thong cong » trong cong, tong cong, thong thong
thanh lap » thanh san, phan lap, thanh hai
ho chieu » hoc thieu, doi chieu, mot chieu
trung va » truong va, trang va, trung ha
va thong » va thuong, va phuong, he thong
cong san » cong tac
thai cao » tai cao, thoai cac, thuat cao

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)) tinh - thanh trung va thong cong san ((thai cao) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) tinh - thanh trung va thong cong san ((thai cao) OR (thanh lap)).
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) tinh - thanh trung va thong cong san ((thai cao) or (thanh lap))*.