Perhaps you should try some spelling variations:
trinh phan » trinh han, trinh quan, thanh phan
chieu sang » chieu sach, chieu xanh, hieu lang
anh quang » anh xquang, anh quan, nhanh quang
quang xay » quang tay, quang xuan, quang huy
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, mot chieu
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - anh quang xay dung cong trinh phan cau~.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - anh quang xay dung cong trinh phan cau*.