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

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

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