Perhaps you should try some spelling variations:
trinh thanh » tinh thanh, trinh han, trinh toan
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
phap cong » phan cong, pham cong, phap phong
thanh cau » thanh chau, thanh mau, nhanh cau
tung cua » trung cua, tuong cua, dung cua

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 sang - thanh ((tung cua) or (dung luan)) phap cong trinh thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh ((tung cua) OR (dung luan)) phap cong trinh thanh cau*.