Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
trinh cam » trinh cham, trinh cau, trinh cac
trinh tam » trinh tai, trinh toan, trinh cham
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu tinh) OR (chieu sach)) - hanh ((trinh cam) OR (trinh tam)) nhung cong dan than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu tinh) OR (chieu sach)) - hanh ((trinh cam) OR (trinh tam)) nhung cong dan than cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) OR (chieu sach)) - hanh ((trinh cam) OR (trinh tam)) nhung cong dan than cau*.