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 » thanh toan, trinh han, trinh quan
doi chieu » doc hieu, doi chi, ho chieu
truong ba » truong bao, truong bo, truong va
trung ba » trung ha, trung va, trung bo

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 ba) OR (truong ba)) tuong cong ((trinh toan) or (tinh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh ((trung ba) OR (truong ba)) tuong cong ((trinh toan) OR (tinh toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh ((trung ba) OR (truong ba)) tuong cong ((trinh toan) or (tinh toan)) cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((trung ba) OR (truong ba)) tuong cong ((trinh toan) or (tinh toan)) cau*.