Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trinh quan » tinh quang, trinh han
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
trinh cua » tinh cua, trinh luan, trinh chat
cong danh » cuong danh, cong dan, cong thanh
danh tuan » anh tuan, manh tuan, danh thanh
tuan cau » toan cau, quan cau, tuan cu

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 cua) or (((trinh quan) OR (trinh luat)))) nhung cong danh tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh ((trinh cua) OR (((trinh quan) OR (trinh luat)))) nhung cong danh tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh ((trinh cua) or (((trinh quan) OR (trinh luat)))) nhung cong danh tuan cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh ((trinh cua) or (((trinh quan) OR (trinh luat)))) nhung cong danh tuan cau*.