Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung cap, dung cua
cong vang » cong lang, cong quang, cong ngang
thang cau » thong cau, thanh chau, nhung cau
hang cau » hang dau, hang ca, nhung cau

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

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