Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
thieu sang » chieu sang, thieu khang, thieu quang
thanh phan » thanh pho, thanh san, thanh toan
hoc thieu » toc thieu, hoc hien
anh quang » anh xquang, anh quan, nhanh quang
quang xay » quang tay, quang xuan, quang huy
dung cong » dung trong
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: hoc thieu sang - anh quang xay dung cong thanh phan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - anh quang xay dung cong thanh phan cau*.