Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, hang cong
ban phuong » bang phuong, ban huong, van phuong
phuong cau » huong cau, phuong cham, phuong cach
doi chieu » doi chi, ho chieu, mot chieu
trung cua » truong cua, trung cap, dung cua
doc hieu » toc thieu, hoc thieu, hoc hien
cong ban » cong bang, cong san, cong tan

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 cua) or (trung tuan)) nhung cong ban phuong cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) sach - thanh ((trung cua) OR (trung tuan)) nhung cong ban phuong cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doc hieu)) sach - thanh ((trung cua) or (trung tuan)) nhung cong ban phuong cau".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doc hieu)) sach - thanh ((trung cua) or (trung tuan)) nhung cong ban phuong cau*.