Perhaps you should try some spelling variations:
thieu sach » thien hach, hieu cach, theo sach
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
ngan chung » ngan hang, luan chung, nha chung
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
cong ngan » cong ngang, cong nhan, dong ngan

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