Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
trung tuan » trung thanh, trung tam, tran tuan
thong dung » thong cong, thong thuong
trung cap » truong cao, trung tam
dung dat » dung va, dung tai
dat sach » mat sach, dat khach, nam sach
sach dat » sach dao, sach danh, sach bai

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu sach - thanh ((trung tuan) or (trung cap)) thong dung dat sach dat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sach - thanh ((trung tuan) OR (trung cap)) thong dung dat sach dat*.