Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trinh toan » tinh toan, thanh toan, trinh han
doc chieu » doc hieu, doi chieu, toc thieu
trung can » trung van, trong can, trung ca
trung cap » truong cao, trung tam
tong cong » trong cong, cong cong, dung cong
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc chieu sach - thanh ((trung can) or (trung cap)) tong cong trinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc chieu sach - thanh ((trung can) OR (trung cap)) tong cong trinh toan tap.
• Adding a wildcard symbol may retrieve word variants: doc chieu sach - thanh ((trung can) or (trung cap)) tong cong trinh toan tap*.