Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
truong cua » truong ca, truong quan, truong cao
tieu sach » dien sach, te sach, viet sach
trung cua » trung tuan, trung cap, dung cua
dong cong » duong cong, dung cong, dang cong
cong tang » cong thang, cong tan, cong lang
tang nang » tang bang, tang nong, thong nang

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) or (chieu sach)) - thanh ((trung cua) OR (truong cua)) dong cong tang nang cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu sach) OR (chieu sach)) - thanh ((trung cua) OR (truong cua)) dong cong tang nang cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu sach) or (chieu sach)) - thanh ((trung cua) OR (truong cua)) dong cong tang nang cao".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu sach) or (chieu sach)) - thanh ((trung cua) OR (truong cua)) dong cong tang nang cao*.