Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
cang thang » cong thanh, dang thanh
nhung cong » dung cong, thong cong, hang cong
thang cua » thong cua, hang cua, than cua
cua nhung » va nhung
trinh tai » trinh toan, trinh tu, chinh tai
trinh han » trinh quan

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) or (chinh sach)) - cang thang cua nhung cong ((trinh tai) OR (trinh han)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chinh sach)) - cang thang cua nhung cong ((trinh tai) OR (trinh han)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chinh sach)) - cang thang cua nhung cong ((trinh tai) OR (trinh han)) cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chinh sach)) - cang thang cua nhung cong ((trinh tai) OR (trinh han)) cao*.