Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, truong thanh
nhung cong » dung cong, thong cong, hang cong
tieu sach » chieu sach, dien sach, te sach
tran tuan » tran xuan, tran quang, tran thanh
cong anh » cong danh, dong anh, hong anh
quan cau » quang cao, toan cau, quan cua
quan ha » quan he

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - thanh ((trung tuan) or (tran tuan)) nhung cong anh ((quan cau) OR (quan ha))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - thanh ((trung tuan) OR (tran tuan)) nhung cong anh ((quan cau) OR (quan ha)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sach - thanh ((trung tuan) or (tran tuan)) nhung cong anh ((quan cau) OR (quan ha))".
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - thanh ((trung tuan) or (tran tuan)) nhung cong anh ((quan cau) OR (quan ha))*.