Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
trung tuan » trung thanh, trung tam, tran tuan
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung cap, dung cua
cong vang » cong lang, cong quang, cong ngang
thang cau » hang cau, thong cau, thanh chau
cong van » cong san, song van, 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: hoc thieu sach - thanh ((trung cua) or (trung tuan)) nhung ((cong van) OR (cong vang)) thang cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - thanh ((trung cua) OR (trung tuan)) nhung ((cong van) OR (cong vang)) thang cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - thanh ((trung cua) or (trung tuan)) nhung ((cong van) OR (cong vang)) thang cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh ((trung cua) or (trung tuan)) nhung ((cong van) OR (cong vang)) thang cau*.