Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh dung » thanh duong, thanh hung, hanh dung
thanh tung » thanh cong
trinh hang » trinh han, tranh hang, trinh hanh
khoa dung » hoc dung, khoa cong
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, mot chieu
hang tai » hang va, dung tai

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 - ((thanh dung) or (thanh tung)) khoa dung cong trinh hang tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - ((thanh dung) OR (thanh tung)) khoa dung cong trinh hang tai.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - ((thanh dung) or (thanh tung)) khoa dung cong trinh hang tai*.