Perhaps you should try some spelling variations:
trinh thuat » trinh thiet, trinh thuc, trinh chat
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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 - hanh ((trinh thuat) OR (trinh luat)) nhung cong dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh ((trinh thuat) OR (trinh luat)) nhung cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh ((trinh thuat) OR (trinh luat)) nhung cong dan toan cau*.