Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, theo chu, thi chieu
thong dong » thong duong, thuong dong, thong cong
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
dong cong » duong cong, dung cong, dang cong
ho chieu » hoc thieu, doi chieu, mot chieu
khan cap » than cap, khoan cam, phan cac
khan ap » han ap, khan dam

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

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